I totally understand. I’m 15 and have known since I was a child I was ADHD yet I have straight As (and not from medication, I never used medication for my ADHD). I think my success in school is because of my, as I call it, “selective hyperactivity”. I love school and tend to hyperfocus on homework. Though, in lectures, I often space out so I have to study a lot. I also learned techniques to help that. I hope this helps. YOU AREN’T CRAZY!