I'm glad that you have an anger crisis team. Learning more about anger can really help. It does sound like it might help you if you did talk to a therapist. I can understand your being afraid but it could really help. I think that anger plagues us because we can't express our true feelings and therapy helps with that.

There are a lot of helpful articles on PC about anger and needing others approval. Here are just a few:
How to Switch Off an Angry Person | World of Psychology
Anger Management | Psych Central
Anger Management | Psych Central
7 Mistaken Assumptions Angry People Make | Psych Central