Zinco, I'm sorry to hear things have taken a turn for the worst. You're right, it doesn't seem like the meds could stop working overnight. I have experience with depression being turned on like a switch though. For me, it was a Sunday morning in early August that I was hit with a wave of depression, and it has only gotten worse since then.

Please don't feel like a loser. I'm not working now either because I'm too mentally ill. We have to accept that depression is a disease that we continually have to fight, just like cancer or something. Or in your case, I know you've come to believe that when depression hits you, as it does quite cyclicly (a word?) for you, you just have to ride it out and know that it will pass.