Do ADHDers feel as if the made for something much bigger then normal life.

Why do I always feel like I'm meant to be something bigger than working a normal job and being average physically makes me sick. I was on the tracks to becoming a professional athlete but when I was 16 I herniated my disc, my second option in life was to join the marines but obviously the door slammed in my face. Due my adhd my grades don't reflect my knowledge as I think many other adhders would agree. I'm 21 now and finally made it into university after grinding to get the required grades but something just doesn't sit right. I want to be great, I was meant to be great I don't see any other option or any other reality where I'm not one of the best at what I do. The thing right now is that I'm struggling to find something that I'm deeply passionate about that I'm also good at because I've always been a sport orientated individual.