Mastery of almost anything takes something like ten thousand hours of practice. At eight hours a day, five days a week, that is about five years before you are truly expert at your job. Overnight success is a story people tell afterward. No shortcut exists, which is discouraging for roughly a minute and then encouraging, because both time and effort are within reach of anyone.
This is the short version. The full lesson, with the story behind it, is in the book.
Take The Summer Camp MBA with you, or get the field notes by email while you work through the lessons here.