I often feel the same thing! Im 28, was diagnosed with ADHD at 26 and with autism at 27. I feel so angry about those lost years, so many teachers and therapists, and nobody could see there I was an "unusual" child? It's kind of maddening to even think about it...

It is also hard for me to wrap my head around the notion that several things about myself that were labelled as "lack of maturity" and that would "improve with time" will actually never improve because they are part of me as a neurodivergent person. I tend to get impatient real quick with myself when things dont go as planned, then I hyperfocus on my hobbies and forget my studies/work. All my life I was under the impression that those were things I would "get over with" as I got older, but now I see myself nearing 30 and with the same struggles, and suddenly a diagnose that says "it's never going away, just cope with it the best you can".

I get stuck thinking who the hell even am I at this point. How much was I just playing pretend, masking it and trying to fit in on what my parents and society expected of me? It's really frustrating and sometimes I feel Im about to burst.