I think it's hard for most people to realize, but you can know very well that a suggestion's correct, you can know what the problem is, and you can control it in practice--but you can't control during a game.
我想一般人很難體會，像你明明知道某個建議是對的，也知道是什麼缺點，練習時也能控制、避免這些缺點；但比賽時卻無法控制。