Everything I have read says that you have it for life. how
ever, as you get older you (hopefully) learn how
to compensate. And the older you get, the more control you usually have. how
ever, if you haven't learned how
to compensate or deal with the ADHD, thats when depression, anxiety, or self medication can set in.
Having said that - the big IF is - was it an accurate diagnosis of ADHD. There are things that can make it seem like you have ADHD.