"For people with ADHD, they grow bored when results are not achieved at the desired time"
This is really well articulated. At least in my case, this hit the nail on the head. The difference between me being bought in vs not is almost out of my hands. If results aren't happening at the rate at which is expect, I feel like I can enter an "autopilot" mode. Where I get things done, but I become overly complacent.
On the opposite end, when growth/results are exceeding my expectations, I feel an overwhelming urgency to push even hard, and more frequently.
In both instances I can feel like I get burnt out. Burnt from boredom or burnt from overworking. On some level, I think this contributes to a bit of anxiety (especially as it relates to work), but it's something I feel like I've learned to manage better over the past couple years.