I wish I would have trained to become a professional wrestler
Why didn't you train properly to become a wrestler?
The reason I didn't do any wrestling programs is because of the fact that I'm afraid of getting injured.
Focusing on the path not taken can be unhealthy. You may end up becoming depressed over what could have been. Instead try to think about the good things in your life and  about the decisions you've made to get there.
Yeah, it's just a shame.
Living in the past is unhealthy. It sounds like you're doing well so you should have no regrets.