I was diagnosed with ADHD and cyclothymic disorder when I was 48. I'll be 53 early next year. I wasn't all that convinced about the CT diagnosis, I'm still not sure it just isn't the mood swings of ADHD. But maybe I have both and am moodier than your average ADHD person.
Unmedicated cos at the time there were no approved meds for Adults with ADHD in the country where I live. Never really perused it. I hate taking medicine and been known to lug a headache around for days rather than take a paracetamol.
Did really well (in comparison to before diagnosis) by finding, personalising strategies and building habits. Just knowing I had ADHD helped, cos I could evaluate responses and go to battle when I felt the ADHD trying to have its own way when I needed to get a grip on something.
Just started anti depressants and could kick myself all up the road and back for refusing them when I got diagnosed. Christ on a bike. I can't believe this is how people are supposed to live. All those years wading through head treacle not realising I could have a nice, paved path instead.
Not having to fight through my inner Pootle With Massive Black Cloud Blotting Out The Sky narrative just to do basic things is a massive help. I can feel the ADHD start up, but it's much much easier to push back in its box long enough to get a boring thing done cos it's a battle on one front, not two. Still have to use extraordinary effort to keep the hyperfocus under control. Interesting things I suddenly get obsessed with are my kryptonite. But even that feels less of an issue. Maybe cos I have less of a pressing need to escape into something just to keep me away from my head state.
Fingers crossed the antiDs keep working. Cos I do not want to go back to being Pootle. I'm not sure I'll find it doable now I've felt the contrast.