Metabolism. A lot things is just manifestation of your metabolic system.
Stress. If you stress your body for just the right amount, it would adapt. Not too much which would break things, not too little that it would be ineffective.
Detachment. For perfect exercusion, you are out of the loop, just techniques.
Forward Looking. Sometimes your exercusions aren’t perfect, but if you dwell on it, you are screwed. The only way is to look forward instead of backward.
Pressure. There are lot of high stake situations. For normal people, the pressure alone is gonna break them. But there are group of people who won’t react to pressure. This is a set of skill that can be trained.