Hello and welcome,
I am sorry to read of your problems and am wondering if you have talked with your parents? Being depressed since you were 11 is a long time.
Sorry for the edit but discussions about self harm are not permited in the forums.
Here is a link to a site that you may find helpful.
~~Kitt~~Moderator: Anxiety/Panic, Osteoarthritis, GERD/Heartburn and Heart/Cardiovascular Disease. www.healingwell.com"If you can't change the world, change your world"