I think it's possible for you to experience such feelings. Certainly we all have our manic or mixed manic selves, stable selves, and the depressed self that we know isn't us at it's baseline. I've heard others describe it as a sort of multiple personality. I don't see it quite that way for me, though. I recognize the same self in all of those states, but see it more as "the best of me", "the tortured me", and the "baseline me". Obviously when I'm manic I'm out of control with an impulsivity that does lead me to do and say things I wouldn't do in other mental states. I certainly wouldn't say that everything I did/said when manic was reflective of my true desires or feelings. I'm definitely no ultra pure angel in any state. Frankly, I wouldn't want to be. No fun! But I'm also not the polar opposite.