I can tell you that I know what you are talking about. I felt the same way in school. I can sit and think about it and some of it is blacked out and what isn't blacked out, is a blur. You know I don't even remember going to prom. I know I did, I've got the pictures.
Don't think that you're going to be a failure. I know it's hard and there is some days I sit and wonder why. I made it through high school and college. And I have faith in you and that you will make it.
Welcome to the sight and if you need to talk, I am here!