I was incredibly lucky, once I got into software dev, that my untreated ADHD often manifested in hyperfocus, so I could deliver large amounts of business value in bursts, that meant my other foibles were tolerable.
Of course, my spending 20 hours of a day hacking on something for a week was very hard on my family, but at least I stay employed.
I much prefer being medicated. The symptoms are still there, but manageable. I still need lists to ensure I don't forget things, but at least with medication I a) remember I have a list and b) remember to use it.
So many times previously, people would say "Just write a list, how hard is that?"
It was quite hard.