Growing up with it decades ago before most people (including me) knew it even had a name was very frustrating a lot of the time. I knew something with me was seriously "off" compared to my peers because I could never comprehend how they were able to complete homework in and do well in classes they claimed to hate.
I also knew however that when it came to things I did find intellectually or emotionally stimulating, no one could touch me. That fact alone seemed to confound my teachers and especially my parents. Things I found interesting were many times the subjects of a fairly serious "hyper-focus" event. To me though, working, writing or reading something for hours and hours or even days without rest were bliss. The personal satisfaction I got from these times made the awful periods worth it (for me at least) because I knew my friends and peers would never know what I did. They had the super GPAs and all of the "pats on the back" they could ever handle. I always felt that I had something more substantial even if it got me into a boat-load of trouble quite often. I always thought that if I could just make everyone understand me a little, I wouldn't get yelled at or punished because then everyone would see why I just could not act or think they way they apparently wanted me to. It was quite frustrating but at the same time, it was their loss more than mine.
I'm middle-aged now and my ADD diagnosis 10 years ago was a positive thing because it gave me some degree of understanding. As an adult, I have learned many ways to deal with this and I can now, for the most part, avoid the great storms of my youth. In essence though, I never changed the way I see things. I just manage to avoid some (though not nearly all) of the pitfalls I used to fall into. I still pull "hyper-focus" events out when I want or need to...and I still get the same satisfaction and "rush" out of it. I also still feel a bit sorry for all of the people who will only ever see ADD for what it looks like from their point of view. It is certainly not a "blessing" because God knows it can be awful a lot of the time but on the other hand, it really doesn't always have to be a curse either.