Well ADHD isn't one thing to everyone who has it. It's a whole set of symptoms and everyone who has it has each of those things to a variable degree. For some people with ADHD doing tasks right away can be helpful. Other people need lists, other people need a reminder system. Coping mechanisms don't work universally. What's important is that you experiment and try them out until you find something that helps
Edit: and to answer your original question. I let myself get distracted. The dishes will just be half done the next time I see them. And oh look I already did the countertops too, great