I think there is (with some exceptions) a difference between doing something 'bad' vs. being 'bad' to the core.

Just like someone with a disability or illness... they are not the illness itself. Your T sees you as more than whatever bad thing(s) you've done.

Such a complete identification with the 'bad' deed or holding a belief that is so strong could be explored... It feels like punishment? Or keeping yourself jailed for a past misdeed.