As someone who is in recovery from Heroin and other drugs, and as someone that works in the recovery community and writes about recovery here, I can tell you without a doubt talking about how you are feeling is the best therapy you can do. That is the whole concept behind going to a meeting. That was why I initiated the chat in discord for recovery. I saw people responding to my posts but not having a place to talk and support each other, see a need, fill it you know? I hope you are able to process through your feelings and come to resolution regarding them, stewing on our hurts is never a good idea for anyone.