Will treating my ADD help with learning the piano/staying on a diet?

I have "mild ADD". I find it hard to focus or exert a lot of energy into school work. i'm going on meds soon for it. will it help me also stay on track on piano? i really want to improve. also will it help me keep my focus on my diet and not betray my diet plan so much? basically will it change my intelligence for piano or enhance my willpower? thanks.