I've also stopped my meds before. Some are REALLY going to land you up with serious side-effects if you stop them suddenly. Our meds also keep us stable, and stop the depression and mania. Stopping meds will bring this about again.
I stopped my meds when I felt they weren't helping me; I still should have rather consulted with my pdoc and adjusted my meds. I'm in a very similar boat now, where I don't feel the meds are helping as they should, but i've kept on them, and am seeing my pdoc later to get them adjusted. I know something HAS to change.