Years ago, a friend of mine knew a person who had been through trauma. He told me that he wanted to give this individual some advice so this person could be helped and could learn how to cope.
I told him that could be a bad idea. The thing is, if a trauma survivor has a lot of anger inside because of what happened to him/her and isn't on psychiatric medication that works well to help them, the therapy can actually make the anger worse.
Besides, my friend wasn't a trained psychotherapist anyway.