I don't know if you remember that we talked on the phone a while ago. If you ever feel the need to hear a friendly voice, especially if you're contemplating suicide, call me. That being said, my dear, two years is an instant of a lifetime. I know time goes slower when you're young, but just keep telling yourself that it's not forever.
Unfortunately this economy is probably keeping you from finding a full time job that will allow you to buy a car and get a place of your own. Although your choices are limited, you still have a few options. Joining the military is one, but there are a few others that aren't as drastic. Check out AmeriCorps and JobCorps. The first pays a stipend that's equal to minimum wage plus cash or tuition awards after a year of service. You can also attend college while in this program. The second one, I believe provides job training and housing without needing a car.
Leaving everyone and everything behind may be daunting, but aside from escaping the cult, you need to assert your independence. Be proactive now, so you won't be in a desperate situation as in being homeless later. No matter what, when you're feeling down, remember that it won't be like this forever.
Also, I'm pretty sure you told me something on the phone that indicates you may possibly have someone to turn to, but I won't discuss it on a public forum so as not to give details as to your personal situation. Please check your private messages, and in the meantime, check out the links below.