Depression - Teen Support Group
Teen depression is marked by persistent sadness, discouragement, loss of self-worth, and loss of interest in usual activities. Depression can be a temporary response to many situations and stresses. Teens may be more susceptible to depression due to the normal maturation process, the stress associated with it, and conflicts with parents as they become more independent.
I like the idea that Tessie brought up: drawing on the areas you cut. There's something called "the butterfly project" or something like that and it involved drawing butterflies on the areas you've cut and to write people's names under them, of those who want you to get better.