Dysthymia.
Chronic Depression.
www.mayoclinic.com/health/dysthymia/DS01111 I've been battling this shit since I was 8. That is a LONG DAMN TIME to deal with this and well past time to take care of it. Now, hopefully, I can become a normal person. Someone who isn't angry and exhausted nearly every minute of every day.
That's a nice goal to have.