I think the following paragraph is full of insight. In fact, you could stop after the first two sentences and it will do you a world of good!
Perfectionism is the voice of the oppressor, the enemy of the people. It will keep you cramped and insane your whole life. I think perfectionism is based on the obsessive belief that if you run carefully enough, hitting each stepping-stone just right, you won’t have to die. The truth is that you will die anyway and that a lot of people who aren’t even looking at their feet are going to do a whole lot better than you, and have a lot more fun while they’re doing it.