I've largely done those things too until I got diagnosed, at 27. Since then I did adderall on and off, it works decently for me, however, the effects on my mood as it drains out of my system are not great. Mostly, I become extremely irritable. Lately I've been reading and watching more about ADHD, and Russell Barkley really changed the way I see the issue. I, now more than ever, see ADHD as a chemical shortcoming of my brain and I'm really pursuing the right drug or combination of drugs to deal with issues I've been failing to overcome for decades.