Being a former anorexic from high school (male in the states), finding a good therapist can change your world. As others have mentioned, things will progressively get better after you stop and put effort into good programs. It's OK if you don't do great in one course, life can be full of second chances. If possible, talk to your professor and seek extensions on schoolwork etc. I have had much luck asking for grace periods with professors at multiple universities.
Sending positive thoughts your way.