Early life is all about trial-and-error practice. If we had given up in the face of failure, repetition, and difficulty, we would never have learned to walk or tie our shoes. So why, as adults, do we often give up on a goal when at first we don’t succeed? In his study of how we learn (prompted by his pursuit of disciplines such as music and golf), Sterner has found that we have forgotten the principles of practice the process of picking a goal and applying steady effort to reach it. The methods Sterner teaches show that practice done properly isn’t drudgery on the way to mastery but a fulfilling process in and of itself, one that builds discipline and clarity.