i am 18 years old and are currently attending highschool. actually i have quite a few good friends and im performing extremely well at school (mostly top grades, although i am somewhat stuggling with my ADHD), but still i feel very sad most of the time and it's getting worse every day. it's especially bad when trying to sleep. sometimes it takes 5 hours until i'm actually asleep and then i feel even worse in the morning (sleeping pills don't really work). i also hve to think about suicide all the time. i'm not actually planning to do it, but i can't get rid of the thoughts. the thing is my situation is actually quite good and i don't have problems with anyone. so waht can cause all this? and more importantly, how do i get rid of it?