Neuroplasticity: No Brain is Set in Stone

Scientists in the past believed that the human brain stopped growing in childhood, leaving only a gradual decline in adulthood. However, modern neuroscience has discovered a revolutionary fact that overturns this: ‘Neuroplasticity.’

‘Plasticity’ means that qualities are easy to change, like clay. Even until the moment of death, our brains constantly rearrange their physical structure according to new experiences, learning, and ways of thinking.

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I. Use It or Lose It; Use It and Strengthen It

Nerve cells (neurons) in the brain connect with each other to form a vast network.

• Hebb’s Law: “Neurons that fire together, wire together.” The more you repeat a specific action or thought, the wider and more solid that path becomes, like a highway.
• Pruning: Conversely, neural paths not used for a long time are removed for efficiency.

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II. Three Keys to Utilizing Neuroplasticity

1. Novelty: Walking a new path instead of the usual one, learning an unfamiliar language, or starting a new hobby. The brain explosively creates new synapses for survival in unfamiliar situations.
2. Focused Attention: Only activities done with conscious focus, rather than dazed habits, change the biochemical structure of the brain.
3. Sufficient Rest and Sleep: Contents learned during the day are physically inscribed in the brain during deep sleep. Sleep is the ‘construction time’ when neuroplasticity is realized.

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III. Biological Meaning of Changing Habits

The reason it is difficult to break a bad habit is not that your willpower is weak. It is because that habit has already cleared a massive highway (neural network) in your brain.

The process of creating a new habit is like carving a new path in a dense jungle with a single sickle. It’s hard and slow at first, but if you walk that path every day, the jungle eventually becomes a path, and the existing old path becomes overgrown with weeds and disappears. This is the process of ‘Rewiring the brain.‘

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IV. Scientific Basis of Growth Mindset

Thoughts like “I’m not smart” or “I’m just like this” are acts of denying neuroplasticity yourself. Your intelligence and personality are not fixed fossils. Depending on what you learn and what you think today, your brain can transform into a completely different physical entity tomorrow.

Conclusion: You are the Architect of Your Brain

Neuroplasticity gives us infinite responsibility and hope at the same time. While the past you lived through made your current brain, the today you choose will determine your future brain.

Even at this moment as you read this text, new connections are being made within your brain. It is never too late. Your brain is always prepared for change and is waiting only for your command (willful practice). Begin rewriting your great brain.