Hi, I know this feeling. I've been through it quite thoroughly. What helped me was picking up an old hobby, for me it was art, or taking a little walk around some beautiful trail. Anything to really get your mind off the struggles I was feeling. I would also recommend therapy if it is getting that bad. I was suicidal and therapy has been very beneficial for me, so I can't recommend it enough. If your feelings are like this due to something happening recently, like a breakup or something, give yourself some time to really mourn in a healthy way, try to talk to friends/family even if you don't go out, just make some phone calls. They care for you and love you, they would love to help in any way.