Trading is a very entrepreneurial type of business. Even through you might have traded in a firm's prop account, it's more akin to running you own business under some one else's umbrella. The skills you've learned as a trader are not portable to any other business. So, if you were not able to earn enough to save money to either retire or set up a new business, trying something new is very difficult after trading.
I have one friend that after 15 years trading, went back to school to receive a teaching degree. He now works at a school. He's happy. It's difficult for most of us to go back to school after many years to be more marketable, but it might be your only choice. (Can be an expensive choice.)