I don't know about
treatment specifically. But outside of therapy and psychology, there are a lot of schools of thought, methods, authors, etc. that have to do with this kind of thing. You might dismiss this as no good because there is no science behind, perhaps nothing scholarly, or no professional accountability. But even so - is there necessarily anything better? Therapy has failed to convince the public of its utility. Self-help also has a bad reputation, but that might only cost you the price of some books, as opposed to expensive sessions with a licensed professional.
Self help might be a farce. There might be no viable alternative to therapy. But most don't have any grounds to judge these kinds of things. We think that people know too little about physical health, but holy shit we laymen don't know anything about mental health. The only (false) dichotomy we often see is "talk about it" vs "don't and let it fester".
I don't know much myself. But I've preferred - so far - to keep it a private matter, between me and my diary or various other techniques I use for processing things and self-reflection.