Perfect practice makes perfect.
Best thing said so far.
The hardest skill to learn about shooting a bow, rifle or pistol, is not when to shot or how, but when not to shoot!!!
You have to learn to put it down and not push the shot. If you lose concentration, get tired; stop and put it down. Rest, relax or come back tomorrow.
The physical and mental functions are about developing muscle memory of the perfect shot. Hurried and or pushed shots will rarely be good and all it does is enhance BAD habits. Not what you want.
Focus on 1-2 skills at practice and learn when to quit for the day.