I'm sorry.
I mean it. You're going through anguish and I'm not sure how to help but can you change anything, right away, about your life that is making you miserable?
Just start small. Remove something hideous from your world. A bad memory - meditate, indulge yourself in something good for your mind. Exercise. I know it may sound simplistic, but that's how we all get out of the worst places. Little steps. Little by little. Start something new. Do something different. Pick up a book, look at a video, watch animals. They're the best teachers for how to live, sometimes. And don't expect yourself to be spectacular or accomplished. You're young. Keep hope alive in yourself. Steer toward your passions. Dive into them.