The Brain You Repeatedly Build Dr B.S.Chakravarthy
The Brain You Repeatedly Build
A child is not born saying:
I am unlucky.
Saturn is against me.
I am not intelligent.
People like me cannot succeed.
My suffering is because of something I did in a previous birth.
Nor is a child born saying:
I can learn.
I can change.
Failure is temporary.
I can forgive.
I can become disciplined.
I can try again.
The newborn brain arrives with extraordinary biological machinery — inherited tendencies, developmental programmes, raw capacity — but not with this elaborate library of explanations about who we are, why things happen to us, whom to fear, what is auspicious, what is shameful, what success means, or what destiny has supposedly already decided.
Much of that comes later.
And it comes through repetition.
That is where neuroplasticity becomes genuinely interesting — not merely as neuroscience, but as a way of understanding how a human life gradually acquires its patterns.
We inherit more than genes
In India, perhaps more visibly than in many societies, a child grows up inside an enormous ocean of stories: the freedom struggle and the sacrifices behind it; family histories and regional identities; the Ramayana and Mahabharata, with their courage, duty, loyalty, sacrifice, dharma and moral conflict; temples, mosques, churches, festivals; conversations about God, karma, destiny and rebirth; horoscopes and auspicious timing that, in many families, quietly shape decisions about marriage, education, travel, business and important ceremonies.
These traditions belong to the cultural world millions of people are born into. They can offer belonging, continuity, ethical narrative, comfort, meaning.
The scientific question is not whether people should or should not value them.
Because the brain does not learn only mathematics, language and music.
It learns interpretations.
It learns fear.
It learns confidence.
It learns prejudice.
It learns helplessness.
It learns trust.
It learns what deserves attention.
And eventually, what began as something repeatedly heard from outside can start to sound like a voice arising naturally from within.
Neurons that repeatedly work together become better at working together
One of the most useful simplified ideas in neuroscience comes from Donald Hebb's work on learning, commonly summarized as:
The sentence oversimplifies enormously complex biology, but it captures something profound. When neural circuits are repeatedly activated, their future behaviour can change. Some synaptic connections strengthen; others weaken; networks reorganize with experience; with sustained training, even structural changes can occur.
The brain, in other words, is not a statue. It is a living network continuously modified by what happens to it.1
This is neuroplasticity.
We see striking examples wherever people acquire highly specialized skills.
London taxi drivers who master the city's extraordinarily complicated street layout show differences in hippocampal structure associated with that experience.2
Musicians show experience-related changes in the brain regions tied to their instrument.3,4,19
After brain injury, rehabilitation can sometimes help surviving networks reorganize and recover functions once thought permanently lost.5,6
The details differ from person to person, and plasticity has real biological limits. But the principle is established: experience can change the nervous system.
Which immediately raises a much larger question.
If navigating streets reshapes neural networks, what happens when we navigate the same fearful thought every morning for twenty years? If repeated motor activity becomes automatic, what about repeatedly rehearsed anger, comparison, pessimism, helplessness?
The brain does not ask whether a pathway is wise
This, to me, is one of the most important implications of neuroplasticity.
Plasticity has no morality. The brain does not strengthen only noble patterns. Repeated practice can make useful behaviour more efficient — but it can make maladaptive patterns just as deeply learned.
Imagine someone who meets difficulty and repeatedly thinks:
“Nothing works for me. I am unlucky.”
That thought does not alter the universe. The planets do not rearrange themselves because a neuron fired.
But something more plausible — and more consequential — can happen. The interpretation shapes attention. Attention shapes what is noticed. Expectation shapes how situations are approached. Repeated avoidance shrinks the opportunities to learn from failure. A person expecting defeat hesitates before opportunities, withdraws earlier after setbacks, reads ambiguity pessimistically, and remembers failure more vividly than success.
Eventually he says: “See? I knew I was unlucky.”
But what actually happened? The belief did not necessarily predict reality. It may have helped construct the person's response to reality.
That distinction is enormous.
When destiny becomes a neural habit
Suppose someone has heard, throughout life: “Your stars are not favourable.” “Your Saturn period is bad.” “This happened because of karma from a previous birth.” “You did something at an inauspicious time.”
If these remain cultural stories or private spiritual beliefs, that is one matter. But when they harden into explanations that repeatedly remove personal agency, something different happens psychologically. A person begins surrendering decisions to them.18
Why try again, if failure has already been written?
Why examine my own behaviour, if the explanation lies in a previous birth?
Why build discipline, if my difficulties are caused by a planet?
Why repair a relationship, if I conclude someone has performed a ritual against me?
At that point, the most important question is no longer whether every metaphysical proposition can be proved or disproved.
Does it build courage or helplessness?
Responsibility or resignation?
Inquiry or fear?
Does it make me act more intelligently in the world — or withdraw from it?
That question can be asked without insulting anyone's faith. Our own philosophical traditions, in fact, carry a very different message: the human being must work upon himself.
The Bhagavad Gita does not hand Arjuna a magical escape from difficulty — he must see clearly, understand his conflict, and act. The Mahabharata is not populated by mechanically perfect people, but by human beings confronting choice, loyalty, desire, consequence and moral ambiguity.
Read this way, the great epics need not stand opposed to scientific thinking. They can become mirrors through which we examine the mind.
Perhaps “the power is within you” has a biological meaning
For centuries, spiritual traditions have told human beings that transformation begins within. Neuroscience does not prove the supernatural readings sometimes attached to that claim — but it gives the claim an unexpectedly concrete meaning.
There really is an extraordinary capacity within us: the nervous system can learn. It can modify itself. It can become better at what it repeatedly does.
We do not need magic.
The transformation on offer is already spectacular.
Attention is not a small thing
Every waking day, millions of signals compete for our attention, and we cannot process them all equally. What we repeatedly attend to therefore matters.
Suppose two people experience the same professional setback. One spends the next month replaying: “They humiliated me. They always do this. I should have said this. I will never forgive them.”
The other feels the same hurt — neuroplasticity is not a call to suppress normal emotion — but eventually asks: What happened? What can I learn? What remains in my control? What should I do next?
The event was identical. The subsequent mental training was not.
This is why I would not simply say, “Think positively.” Sometimes life is genuinely terrible. People fall ill. Relationships end. Careers fail. People we love die. Injustice exists.
The brain should not be trained to deny reality. It should be trained to meet reality without unnecessarily multiplying suffering.17
Recognize anger when it arises. Do not practise it every night.
Feel grief. Do not make it your permanent identity.
Experience fear. But do not obey every signal it produces.
That is a more mature meaning of positive thinking. Not fantasy. Direction.
Frequency may matter more than drama
We often imagine transformation as one heroic decision — New Year's Day, a powerful lecture, a devastating failure, a spiritual revelation, a midnight video.
But brains generally learn through repetition. Five or ten minutes of serious daily practice can accomplish what an occasional burst of motivation cannot.
If you want to become kinder, kindness must eventually appear in behaviour.
If you want discipline, perform disciplined actions.
If you want to become forgiving, practise interrupting the rehearsal of resentment.
If you want intellectual honesty, repeatedly say, “I don't know.”
If you want courage, repeatedly approach the manageable things you would rather avoid.
If you want to write, write. If you want to understand physics, study physics. If you want a healthy body, move it — repeatedly.
The fascinating role of difficulty
There is another aspect of this science I find especially beautiful: learning requires challenge.
A fully automatic task offers the nervous system little new to master. But learning often deepens when practice is sufficiently challenging to require attention, effort, correction and adaptation.
Research on the anterior midcingulate cortex has drawn particular interest because this region participates in effort, persistence, cognitive control, and decisions involving difficulty and cost. Popular accounts sometimes call it a “willpower muscle” — too simple, scientifically. There is no single anatomical seat of courage or discipline; human motivation emerges from interacting networks, body states, memory, reward, and social environment.7
But the underlying lesson still holds: voluntarily engaging with difficulty matters. Courage is not built exclusively by doing what already feels comfortable. It is built, in part, by repeatedly approaching what evokes reluctance — and discovering, each time, that you can still act.
The first morning you rise to exercise when every signal says sleep, the resistance can feel enormous. The hundredth morning is different.
Because you changed.
Character may partly be repeated behaviour becoming easier
Consider the qualities we admire: discipline, determination, kindness, forgiveness, love, generosity, empathy, honesty, sincerity, hope, patience.
We often speak of these as though some people simply possess them. But much of character is also behaviour that can be practised. A generous act makes the next generous act imaginable. Repeated honesty reduces the internal negotiation required to tell the truth. Repeated disciplined work makes focus more familiar. Repeated cooperation teaches us whom we can trust — and teaches others that they can trust us.13,14,20
This matters because human achievement is rarely a solitary neurological feat. You need other people. You need trust and cooperation. You need someone willing to take your word. You need colleagues willing to work with you. You need the emotional regulation to survive disagreement, the discipline to delay gratification, and enough humility to correct yourself when the evidence says you are wrong.
Kindness, honesty, empathy and cooperation are therefore not decorative virtues. They are practical capacities that let groups of human beings accomplish what no isolated individual could.
And the reverse is equally true
Now consider anger, jealousy, constant comparison, greed, hatred, resentment, compulsive desire, self-pity, pessimism.
These too can be rehearsed.
One angry thought is human. One jealous reaction is human. One period of despair is human. Neuroplasticity should never become another reason to blame people for ordinary emotion. The problem is rehearsal. When the mind repeatedly returns to the same emotional loop, that pattern grows more familiar — and familiarity can begin to masquerade as personality.15,16
“I am jealous by nature.”
“I cannot forgive.”
“I always worry.”
A better sentence might be:
That sentence holds something the first one does not: possibility. If a pattern was strengthened through repetition, a new response can also be built through repetition — not instantly, not magically, not equally easily for everyone, but often, meaningfully.
In clinical disorders — depression, anxiety, trauma, obsessive illness — such retraining may require psychotherapy, medication, rehabilitation or other professional care. Neuroplasticity describes the biological possibility of change. It is not a substitute for treatment.
You cannot become literally anything — but you can become far more than you think
Here we must resist turning neuroscience into another religion. Neuroplasticity does not mean: believe hard enough and anything will happen.
Genes matter. Childhood matters. Health matters. Opportunity, nutrition, education, poverty and social structure matter. Luck matters. Age matters. Disease and brain injury matter. Biological limits are real. A five-foot person cannot visualize himself into seven feet. No amount of positive thinking cures every neurological disease. No amount of neuroplasticity guarantees wealth or worldly success.
The power of the idea lies somewhere more interesting than that. Within the boundaries life gives us, the nervous system retains a remarkable capacity to adapt.
Exercise, attention and sleep
Learning also reminds us that the brain is part of a body.
Physical activity supports brain health and cognition.8,9,10
Focused attention matters during learning.
Rest and sleep are critical for memory consolidation and performance.11
Pay attention.
Practise.
Rest.
Sleep.
Repeat.
We are tempted to search for exotic shortcuts because ordinary biological truths sound insufficiently glamorous. But the ordinary truth may be the more powerful one.
The brain is undergoing a quiet metamorphosis
This is the image that fascinates me most: at this very moment, none of us carries exactly the brain we had as children. Experience has been modifying it continuously.
Language changed it.
Love changed it.
Loss changed it.
Work changed it.
Success changed it.
Failure changed it.
People changed it.
What we repeatedly feared changed it.
What we repeatedly practised changed it.
There is, in this sense, a quiet metamorphosis running through the whole of a life.
Not a supernatural one. A biological one: stimulus, attention, effort, feedback, rest, repetition, adaptation — again, and again, and again.
So what should we teach a child?
Perhaps this is where neuroplasticity becomes most important for India. Alongside our history, festivals, literature and epics, imagine repeatedly telling children:
Failure is information, not identity.
Ask questions. Evidence matters.
It is respectable to say, “I don't know.”
Your horoscope need not become an excuse for inaction.
Your past need not become your permanent identity.
A painful event deserves compassion, but need not be rehearsed forever.
Another person's success does not diminish you.
Discipline can be trained. Kindness can be practised. Attention can be directed.
Your mind produces thoughts; you do not have to obey every one of them.
A short classroom intervention teaching students that intellectual ability can be developed through effort has, in a large national trial, been shown to raise grades among lower-achieving students.12
Imagine those sentences becoming as culturally familiar as the stories children already hear.
What kind of adults might emerge?
The most important freedom may be the freedom to choose what we repeatedly practise
India won political freedom through extraordinary sacrifice. But there is another freedom each generation must win for itself: freedom from automatic mental captivity, from inherited fear, from unquestioned explanation, from the endless rehearsal of hatred, from the idea that yesterday has already decided tomorrow.
This does not require abandoning culture. It requires examining what we inherit:
Question what produces fear.
Cherish what creates compassion.
Investigate what claims to be fact.
And never surrender human agency unnecessarily.
The real power inside us
We often look for power outside ourselves — in wealth, position, astrology, ritual, approval, a guru, a political leader, a miraculous intervention.
Not the power to command the universe.
The power to train the organism that meets the universe.
You cannot control everything that happens to you. But you can influence what receives your attention. You can influence where you repeatedly place your effort. You can decide which behaviours deserve one more repetition.
And repetition matters, because the brain learns from what we repeatedly ask it to do.
Practice changes proficiency.
Proficiency shapes behaviour.
Repeated behaviour contributes to character.
Character shapes choices.
Choices accumulate into a life.
That is not magic.
Not astrology.
Not positive-thinking mythology.
That is biology, meeting experience.
So perhaps the question worth asking each evening is a simple one
Did I rehearse resentment, or forgiveness?
Comparison, or improvement?
Fear, or inquiry?
Helplessness, or action?
Did I spend another day strengthening the roads leading toward the person I no longer want to be? Or did I put a little traffic onto a different road?
The new road will be difficult at first. That is precisely why it must be travelled.
Tomorrow, travel it again. And again.
Perhaps that is enough. Perhaps that is the real meaning of transformation.
And perhaps it is the most scientifically defensible version of an ancient intuition humanity has repeated for thousands of years:
References
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References were selected from recent peer-reviewed literature; many are available through PubMed Central or open-access journals.
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