Ikyu Kno, There's a Story

In order to master something, you have put in so many reps that you can do it fluently on te autopilot. And by the time bt you get to that point, you know exactly what to expect. In a lot of ways, mastery requires you to find new details to get interested in. No matter how deep you go, there's always some little detail that you can focus on anew - even while everything else is on autopilot.