Personally, I was in an immersive CBT environment and in three sessions a week for a whole year while at MH, and I now go to sessions with a different therapist every other week. Also, bi-weekly support groups.
Being at MH was triggering and I experienced a lot of unpleasant somatic responses at first, but gradually I came to feel safe there and slowly came to a point of "mastery" (Herman's word) over my own emotional triggers.
Presently, I practice DBT (mindfulness) techniques and in addition take Buspar for anxiety.
This stuff really works, if you are willing to work it. And it ain't easy, it's uncomfortable and downright painful at times. But it's the only real way I know if to overcome the psychological traumas incurred in an abusive thought-reform environment. I have come a long, long way in my healing over the last couple of years.