picture in my mind

Neuroscientists have now shown that if we simply practice good habits, our brains will grow and change in response, with the result that these good habits become easier and easier. When we do anything repeatedly, with focused attention, our nerve cells will physically grow new connections between say, nerve center A (go to the gym) and nerve center B (stay at the gym until your workout is done). Nerves A and B develop a stronger connection with more transmitting and receiving points, and going to do our workout becomes a habit with a physical embodiment in the brain. Neurons that fire together, wire together.

-- Rewire, Richard O'Connor