Stephen Jepson says: “quit hungry for the experience”
If you want to learn something physical that is difficult; practice often and quit hungry for the experience. Practice for brief periods of time. Do not practice when you are tired and when you begin to make mistakes quit your practice. Imagine a golden thread fastened to the center of your chest pulling you to your next session “tomorrow at 8 AM–10 AM–whenever, I get to practice again. You want to look forward to your next session with a happy, expectant anticipation–not drudgery. It will keep your learning fun, interesting, and exciting.