[TheLegace]

Your completely right, and it's something only someone with ADHD can understand. Depending on how bad your ADHD is, mental partitioning will be incredibly difficult thing to do and that has everything do with lack of attention/focus regulation.

You will have to find a way to develop the capabilities of your brain(working memory, long term memory, task execution and completion, focus and accuracy). You will have to do something that you have been evolved to do which is to have a creative outlet (Dancing, Music, Art) to develop those abilities. There has to be a task where you have infinite focus/hyperfocus, that builds a higher ability. In a sense you don't have to do something that is hard, but something that comes natural and something that grows.

The sequence of steps and motions that are required for dance, movement of muscles to precisely line up with the notes of a song, to reproduce the form of a drawing/painting all require some sort of mental partitioning. These things are all interrelated. I personally have only scratched the surface, because things become infinitely complex I have to decide what is the most important develop. If your lucky enough to be creative and logical these abilities will bleed into each other.