[mtrimpe]

Just like depression (oversimplified) is being fed up with life, ADD is being bored with life. Your environment has created artificial boundaries that prevent you from doing what interests you, hence said boredom.

Get into the hyper-focus at all cost (it's actually just 'really caring about something,') then learn to stay there longer and longer (also known as 'finding your passion.')

You'll have to break through some boundaries to get there, but that's OK. Once you're passionate about something most of the time, you'll be fine.

P.S. This is intentionally written from the one-sided perspective that does considers ADD to be caused by external factors and not a mental illness or chemical imbalance. Those perspectives are equally valuable; pick the one(s) that works for you.

P.P.S. Remember that if your hyperfocus is valuable enough to other people, you'll be able to pay people to do anything you can't bring yourself to.