These are all illnesses that can be managed and even overcome, but you have to start treating them. A therapist or at least a school counselor is a start. Sometimes, suffering in school is a by-product of mental illness and if you get to work on this and get through it, who knows you could flourish in academics. When it comes to your dad, I can't really speculate very much. Regardless of his views, you need to take care of you.