It never ceases to amaze me how, when I'm doing pretty well, I think I've pretty well gotten it together now, and will never do _____ (fill in the blank) again(!)
I seriously think that sometimes. And before I know it, BOOM! Right back to square one.
Intellectually I remember states different to the one I'm currently in, but at the same time can't imagine being there. Like it's not real or behind a mist where I can't really access it. (That's probably generally a good thing!)