I know how you feel. In grade 12 I was so depressed that I stopped showing up at school for a while. The day before our prom, My principal told me I couldn't go and that I wasn't graduating. I thought I would die! My dad was so mad. Shockingly enough I lived through it and sometimes it is soo hard to see that life does go on and get better and worse. Sometimes you just need to focus on yourself. What do you like to do? what makes you special? what are you good at? ask ppl close to you to help. once you can focus on these things, you can start to see that you might be a good person!! which i believe you are