I feel like I've had this problem for a long time. Sometimes I feel like I am more strict to myself than others in authority have been - (bosses, coaches, my parents, maybe others). What's the most typical for me is not feeling satisfied if I were tested for something and I came out at around 95%. Good God!
Sorry I'm late to this. I feel like I have perfectionist tendencies and I have never seen a thread titled "perfectionism" until now. I felt a real twinge of it just now and I went to research to find if there's something about perfectionism.