I have pretty severe (apparently) adult ADHD. I hesitate to quantify it as ‘adult’ since I’ve never known life without it, but it has been severely limiting. I’ve tried taking medication for it, but due to another… ‘thing’ I have, I don’t handle stimulants well. So, I’ve been searching for ways to combat my lack of focus and attention.
Search for ‘Einstein on the Beach’ on your music teat of choice. I hadn’t heard it before and it’s, so far, the perfect blend of repetition to keep that part of my brain active while I do other stuff.
It’s really interesting that I have to keep half of my brain active while I use the other half to write code and words, or generally do anything non-trivial. Actually, it kinda pisses me off when I think about it, but that passes quickly.