What resolved your anger after diagnosis?

Although I’ve been diagnosed for a year, I’ve only recently tried to accept myself as I am, and it seems to only result in general anger. At society, at myself, at every adult from my childhood who didn’t notice (which is unfair because how could they, this was late 90s middle Europe), and it started to spill into my relationships lately, especially whenever the people do anything else than what I thought they would. And I know this isn’t really coming from being annoyed at them, but it’s something stored inside that I can’t quite name, and I can’t discuss it in therapy until I at least figure out what actually bothers me the most and how do I need to adjust so that it won’t be as bothersome. Hoping that hearing your stories might spark some inspiration in what is it I need to release and how you did it.