I go through stages of very great stability. I'm in that stage right now; it's been 6 months of solid stability right now and it doesn't seem to be anywhere close to destabilizing. So yes, at times I really do "forget" what it was like to be completely unstable and start doubting my diagnosis. Unfortunately, so far I've always cycled back into an episode eventually and am reminded that there is "that thing" I have to deal with.