I had a bad knee injury when I was about seventeen. I wasn't able to climb for about six months. It was kind of like a transformative time for me, because it was really hard for me not to be able to climb. It forced me to appreciate things without just climbing.
If your goal is to make money, becoming an entrepreneur is a sucker's bet. Sure, some entrepreneurs make a lot of money, but if you calculate the amount of stress-inducing work and time it takes and multiply that by the low likelihood of success and eventual payoff, it is not a great way to get rich.