Our brains are constantly evolving, being shaped by our experiences. Each time a thought, behaviour or emotion is repeated, we reinforce our neural pathways. And so with each new thought, behaviour or emotion we begin to build new ways of being. Repeated often and consistently, these small changes lead transformations of the brain.
Neuroplasticity is the 'muscle building' part of the brain. Like with most things, the more often we engage in practice, the stronger and better we become. Naturally what we don’t use, fades away. With regular practice and repetition it becomes automatic, a part of us.
What we think and do, we become.