Is it still possible to be a great physicist?

I've been quite good at mathematics from a young age, and later on in high school I became interested in physics. I also participated in mathematics and physics olympiads and advanced to the national finals (relatively small country tough) and got selected for the training camps for international olympiads.

But when I turned 17 I got a concussion that turned my life upside down. For almost 2 years I suffered from post-concussion syndrome and other health problems and doctors told me to go see a psychiatrist because there was nothing wrong with me and I was "perfectly healthy".

Long story short, I found out I damaged my neck, it got fixed and my body started healing and now I'm already 95% healthy. I'm really happy I got out of this nightmare but now I feel like my academic career is ruined. (wasn't able to study for almost 2 years and barely managed to get my high school diploma)

Is is still possible to be a great pyhsicist? And are there examples of physicists that maybe started at a later age?