I (24M) got diagnosed with ADHD-I a month and a bit ago mainly to be able to actually study consistently but losing out on a romantic connection exposed how much of my life has been run by my ADHD.
For instance I've always had trouble socialising whether it be sparking a conversation or maintaining relationships which has made me super lonely but now that I am diagnosed I now can finally let go of the notion that I have terrible social skills and no wants to socialise with me but rather there is a specific reason for it.
Another thing is emotional attachment in romantic relationships. I often experience limerence and I was always TERRIFIED of break-ups. I would always rather stay in a relationship that didn't serve me than leave, and then I found out about rejection sensitivity dysphoria which made me realize how much that had affected my behaviour in and out of relationships.
I'm definitely still finding myself but at least now I can forgive myself for all the things I missed out on before my diagnosis.