well, I have experienced similar things myself. When I find myself in stressful situations, I just switch off my mind and go forward, because I know that that way I will eventually find a solution to my problems. For example when I have a lot of work to do. If I start doubting, I won't get anywhere. So I have to switch off my mind. And in fact, in retrospect I rarely remember the difficulties that I went through. Maybe, though, that's just my personal experience. Maybe for other people it doesn't work that way.