Human brain is made up of more that 100 billion neurons. Different experiences create different connections which bring different emotions. Depending on which neurons get stimulated, certain connections become stronger and more efficient, while others may become weaker. This is what scientists call neuroplasticity.
Someone who writes code or says types the qwerty keyboard a lot, will create stronger neural connections that will link the two hemispheres of the brain in order to be fast and efficient typing or creative when writing code or algorithms. Virtually, any talent or skill can indeed be created with training, repetition and focus.
Moreover, emotional resilience or rationality are formed by the neurons and neural connections which can be strengthened. Remember whatever you are doing at any moment, you are creating or weakening or strengthening neural connections to improve the brain or make it serve you well and better. Be self aware.