Pick up a good book. My suggest is It, by Stephen King. Get lost in the lives of other people with other problems. It might help you get perspective. At the very least it is a good distraction. Even if it doesn't help the original problem at all, you will get a good book out of it. I'm going to be blunt. You are going to have a problem only as long as you want to have a problem. There is no magic cure. There are not shortcuts. You can spend a lot of money on professional help (they are called professionals for a reason). You can read a lot of self help books. You can try drowning your sorrows. None of those things will help unless you simply decide you are done with it. Life will go on, but only when you decide to let it.
I'd add to this that deciding is required, yes, but alone it's not enough. Our brains unfortunately aren't quite that easy to mold, and depression (because that's quite clearly what's going on with you) is partially a habit. It's pathways in your brain, worn into a nice, comfortable pattern by years of travel, and eventually it damages our brains. It can be undone but takes work. My recommendations:
Good drugs, at least in the short term, to help break the cycle.
Cognitive therapy to get you started on the right thinking/behaviors path.