I am currently reading a book titled: The Power of Habits. The attached pdf illustrates one of the powerful lessons or universal principles of developing habits. The author tells the story of Michael Phelps swimming the 200 meter butterfly in the Beijing Olympics. On the 3rd of 4 lengths, his goggles filled up with water which rendered him blind. He didn’t panic, he simply remembered that his coach had primed him on how to handle such emergencies during his practice sessions (myelination). His coach would often turn the lights out during his practice routines so Phelps would in effect be swimming blind. No black line on the bottom of the pool to follow and no ability to see the competitors peripherally.