You should keep trying. Life is an adventure. Adventures have their bad moments. Sometimes they are really bad. Persevere to reach those times when it is not bad. Only you can truly help here because once depression gets to this level it can become a self replicating thing inside our own minds. You need to argue with your mind and find a way to break out of that spiral. To do that personally I try to look for anything positive to say, or the silver lining in something. "This sucks but at least I can now X"... The more we talk about negative things the more they grow in our mind and feed on themselves. The only way I know to fight that is to look for positive things to say. If you can't say them about yourself, start with saying them about other things, places, events. The process of being positive anywhere can help start a positive feedback loop which is the opposite of what you are in now.

I am no psychologist. I don't buy into all of that myself. I am not trained. I am just another human being who heard you ask for help and I'm trying to offer you hope the only way I know how.

Good luck. FIGHT! It is an adventure, and adventures have their moments in hell... FIGHT!