First and foremost please do not give up...its frustrating I know but I agree with Christina, find a PDoc. Lithium does help a lot of people, especially in the beginning b/c its fast acting. It helped to ground me. I have found over the years with so many med changes what works for me and just know that it will take time. Be patient with yourself. The ones telling you that you can just snap out of it, well I tried that route and I don't suggest it. When I feel depressed and frustrated I keep a daily list of some things I need to do for the day, make them simple and check them off. Even getting one thing accomplished makes me feel better than sitting and spinning. Baby steps is how I've made it, and some days still do
Please take care of yourself