Gracious, I am SO sorry to hear that you feel so badly. I struggle with depression myself. I went to the doctor and he put me on an anti-depressant, and ordered me to receive counseling as well. That has worked pretty well. I think this might be a good idea for you - maybe not the medication (anti-depressants can be bad for young people), but counseling. Talk to your parents or another trusted adult. :)
pray and eat sweets. I always attend a mass too.
Drink a chocolate, and sleep
go talk to someone you trust :)
Watch comedies. Helps. :D