Google "adhd hobby jumping". Too much to explain here. The main thing to keep in mind with ADHD is that when a normal person simply thinks about doing a task, they get a hit of dopamine that gives them the motivation to do the task. An ADHD person doesn't get that until after the task is done, which leads to them never starting. The exception is with things that are an instant dopamine hit. The new shiny. Lather, Rinse, Repeat.