There are some people who take comfort in diagnosis, and take comfort in pill taking.

You are not one of these people. Not yet, in any case. You are still holding yourself together.

Please seek help. You may not be an adult yet, but you are not a child, and you have a right to seek help in a form you will agree to. You are under tremendous strain, and you do need help, before things spin out of control.

As to brain mind interaction it is a bit of both. It is true, for example, that our experience of severe trauma damages the brain and when the brain is so damaged it will affect our thinking and our emotions in overwhelming ways. But meditation changes the brain in ways medication just can't. Still, mind may be our most powerful tools in combating mental problems. Just ponder the mystery of placebo becoming more effective than phamaceutical drugs. It tells us THE MIND is king.

There are forms of help that focus on the mind. A doctor or therapist could get you into Cognitive Behavior Therapy group for example. My health plan offers stress and anxiety management group therapies focusing on coping skills, teaching meditation, and self-care, free or very cheap for members. There are books and programs, for example., my latest favorite, even mentioned on this site: Byron Katie's "The Work". I found that filling my ipod with Wayne Dyer lectures on Tao while going for a walk was doing me much good. On a flip side listening to music that expressed my depression and darkness did nothing to help me pull myself out of it. Your choice what you listen to, your choice what you do or not do.

I just hope you do not let yourself slide too deep before you get help. I think your coming here was the first step in that direction.