Doing extreme stuff like that can be very dangerous. Maybe take a break from it, get yourself in order. See within yourself what you need.
I can relate when you say your "tired of working through it" I am 38 and have been "working through" depression since I was in my teens. I am really getting tired of it. I ask myself the exact same question;"what is wrong with me??" I just recently tried to go off my meds and ended up fighting with my friend and one of my neighbours. When I'm not on meds my fuse is so short, and I have kids, so for me, I have to stay on them. Hope it all works out for you :)
I had a hard time finding medications that worked, too, but I wasn't having all of the same problems you are... I'm sorry to hear it's been so tough.
The hospital is mostly for getting medications figured out in a safe environment, and a lot of the time they have group therapy sessions that help you deal with the trials you face being a person with a mental illness. But make that a last resort. For now, I would ask your psychiatrist about different medications you can try, and maybe ask about some type of mood stabilizer/anti-psychotic. That was the only thing that did it for me (and I'm not bipolar or schizophrenic).
I was stuck to one anti depressant because the other ones either had bad side effects or I couldn't take it because it would interfere with my bleeding disorder.
I totally feel for you though. The anger that builds up inside from basically nowhere, along with the frustration of your medication not working... oh man. Not good.
I wish you the best of luck, and if you need to talk, you know my name.