" Deep practice feels a bit like exploring a dark and unfamiliar room. You start slowly, you bump into furniture, stop, think, and start again. Slowly, and a little painfully, you explore the space over and over, attending to errors, extending your reach into the room a bit farther each time, building a mental map until you can move through it quickly and intuitively. "

― Daniel Coyle , The Talent Code: Unlocking the Secret of Skill in Sports, Art, Music, Math, and Just About Everything Else