Please do not hurt yourself. Ever. I have been there emotionally too before. I have lost 2 friends that way...both were witnesses and one was a young stud elder. Reason I mention that is because we cannot allow our thinking to go too far down that route.
I am in complete agreement with what OnTheWayOut said earlier in this thread. Become proactive and start to minimalize your witness activity. Plans of the diligent one, ya know. "Its impossible to hit a goal you don't have."
I had a friend a few years ago that rented a room in an old Victorian house that was split up into like 10 apartments. He just had a hot plate to cook on and a community bathroom. It was ghetto at his place. Folding chairs, a couch, a fridge and a tv. This was a grown man about 25 at the time. I tell you what tho...hanging out over there, even when I would stay the night and sleep on the floor cuz he slept on the couch, was some good times. We trusted and loved each other. I was relaxed there. I didn't care what he had. It was clean and dry and with good company. Point of that story was, you don't have to have a lot to be satisfied and happy. It doesn't have to cost a lot either.
Figure out what is the cheapest you can live and be realistic about it. Look for residence in walking distance to work and school. Buy a bike and ride to places. Public transport. Just start making strides. Make your own luck and future.