ADHD doesn't work like that. "just" supposes willpower, ADHDers have low willpower. The whole problem is how to "just" do something, so reiterating that is a non-solution.
ADHD isn't really a problem. AIDS is a problem. Malaria is a problem. TB is a problem. First-world emotional issues aren't a problem. If that were the case, I would think 95% of Iraqis would need psychiatric and psychological assistance.