DONT GIVE UP!!
As some people has told you, u almost have ur degree done! Don't give up and sooner than u think u'll be graduated!
It may feel impossible right now, but try to eat healthy and exercise a little, like go running, swimming, dancing classes, whatever!
And about ur job try to focus on the positive things on it and think that it's a temporally thing till u get ur degree, and maybe try to apply for other jobs u think u'd enjoy more.
Life may feel hard sometimes, but think that God wouldn't make go through things u can't overcome!
It sounds corny, but think of Brandy, the way she never gives up and stay overcoming everything and just trying to be a better a positive herself.
All my support for u!! This may be a hard time but I'm sure good things will come!!