Just try to get away from your mom a little--it sounds like she's stressed out, and she's not doing you any good telling you you're killing her. (This is, incidentally, impossible. I should know; my mom is alive and well, and I had chronic depression from about age 9 until I left for college. I still do, but I'm "in remission" right now.) I don't mean move out or anything; just spend some time outdoors or at the mall or wherever. Find yourself a place where nobody expects anything of you, where you can just sit and read or whatever you like to do. That's a great way to get rid of anxiety.
What I know, from living with depression for 13 years now, is that there are always times when it gets better, and you have more energy, and you're glad to be alive. The first day of spring, or a new kitten, or getting that difficult piece of music just right... eventually enough good things happen to help lift your mood, and you're okay for a while.
Depression is kind of a vicious cycle. You have bad brain chemicals, and you feel bad; and then you get tired and unmotivated; and that makes you feel even worse--producing even worse brain chemistry. But eventually, if you stick it out, something will work--whether it's drugs or talk therapy or a good friend or, like I said, the first day of spring and a new kitten--and then your brain will start to figure out how to put the neurotransmitters right again; and you'll feel better; and your brain chemistry will become even more balanced as a result.
Incidentally, does depression get worse for you in wintertime? If so, bright light (especially sunlight) might help. It can't hurt, in any event.
I've been in the hospital for depression, twice; and it's about the most boring thing in the world to be physically well and not have anything to do because they're worried you'll try to kill yourself if they give you so much as a pencil. It works, in a pinch, if you're worried about hurting yourself; but the real work goes on day-by-day, just learning how to live your life and live in your own brain.
Sometimes switching therapists helps. Sometimes switching drugs helps. Sometimes it just goes into spontaneous remission. I don't know what will work for you... I just know something will, eventually.