>>310846848
Sounds rough desu. It's always hard trying to support people emotionally. Most of the time they have to dig out of that hole themselves. All you can really do is be a good friend and be there for them. If they really are trying to get better then it just takes time.
Therapy helps if it's that bad and you can convince them to try it. 
Ultimately they've gotta figure out the source of those feelings and figure out what they need to do to deal with it, and that's different for everybody.