If you want to quit, you need to taper off slowly, preferably supervised.

I could provide you few websites, but... I am not sure if at this moment you are in state to mess with your chemistry... it is not something to do when in acute distress and not much support network.

But sounds to me you are rather acting self-destructive atm. Try to sit down with yourself and reevaluate your situation more rationally... it is not all lost. You still have somewhere to go from where you are now.