I find that most people with ADD / ADHD are incredibly brilliant.Giftedness is often misdiagnosed As ADHD. A lot of the same symptoms. To further make it more confusing, you can also be gifted and ADHD. My daughter is both. Mine was tested and diagnosed this year. Good luck.
If their ADD / ADHD is a problem, it's many times because
> they're a product of public schools, where they didn't fit into the narrow "survival of the unfittest" culture of what it takes to succeed in our public schools (the same success formula for making it in higher education AND in corporate America)
> they live in Ohio, where the BORING 1970's economy revolves around insurance and soap-making... they should probably be in a place where the 30% creative economy exists like it does in most first rate locales. It took me to move out of Ohio to figure out "hey- I'm not the one with the problem!")
> they live in a state similar to Ohio, where they're surrounded by mildly retarded, narrow minded monoculture people who have horrendous creativity deficits.
> they work in careers that are wrong for them, and thus they fail in those careers.
> while they think their lives are falling apart because "they can't keep their homes in order," they could probably be running million / billion dollar companies and paying someone to do their lowly housework.
> they spend too much time caring what all the monoculture people think of them, or worse, defending themselves from the likes of the angry people who are posting insulting messages on this site.
> they waste years or decades dwelling about all their past shortcomings, when in reality they were just in the wrong place and surrounded by the wrong people the entire time.(many of the most successful entrepreneurs fail for 10-20 years before making it big)
> they leave a Psychiatrist's office with an official diagnoses of ADD / ADHD, and instead of having a greater understanding of the advantages of having ADD / ADHD......they go into a 10-20 year depression propped up by an ever changing roster of inaccurately prescribed psychiatric drugs. Many people truly need these drugs drugs. But most people know how to manage themselves without the drugs better than they know how to manage themselves on the drugs. Many of the ADD / ADHD drugs are like learning to walk all over again and one can spend decades trying new drugs and coping with side effects)
In all cases, not "figuring it out in life" until age 30, 40, 50 or whenever isn't such a bad thing these days (hard for people to realize in a state where you're supposed to be groomed and set in motion by age 25).
If it were a choice between a normal, non ADHD life with a $40K/yr insurance job in Ohio
(and all the "wonderful experiences" of fitting into our ritualistic society)
creating the billion dollar idea after age 40... I'd choose the latter any day.