I know how you feel because that's how I felt before I graduated. I also thought I would start to feel more excited as college approached, but that didn't happen either. I would suggest talking to your parents about how you feel because I wish I had done that now. You could get a therapist and find out what is wrong. You don't want to waste your life when you're still so young, and I'm only 22, but if I had started fixing myself at 18 I imagine I'd be so much better now.