I watched a YT the other day where a psychiatrist/trauma specialist was talking about a study of girls suffering from PTSD as a result of CSA. One of the main conclusions -- the best predictor of good outcomes in therapy was how successful the therapist was at helping the patient with affect regulation.

He said:

"You are only as good a therapist as you are an affect regulator" (he said the same about parenting).

"If you cannot get your patients to feel safe and to stop hurting themselves and other people, you are a failure as a therapist. It's ok to do it, just don't charge people."