The single most thing that improved your ADHD?

For me, learning to manage my life in a way that works with my ADHD. For example, if I learn I need to do something, and it's something I can do now, I get up and do it. If I don't, I'm likely to forget or put it off too long. Finding ways to build routines, like I suddenly decided I should lick my teeth when getting ready for bed, this makes me realize they are dirty, and I feel forced to brush my teeth before I can sleep. Before that I wasn't brushing every day. You have to figure out what ADHD prevents you from doing like a normal person, and plan around it.

I don't medicate right now because I have enough control to be able to function at work and my day to day life without it. But I've also had success in the past from either Vyvanse and Strattera (took them at different periods in my life)