Welcome to BP! Here are my thoughts...
I commend you for pursuing your dream. Being a few years older than you, I know exactly what you are going through.
If you are properly "trained," people will take you seriously. I think people will recognize your passion, but without any credentials, opportunities may be hard to come by. However, real estate is one of the few industries where one can make a decent living without much education [banking is the other].
Depending on what you want in life, obtaining a college degree might be feasible. Why? We live in a society that values education. I personally know many people who have their degrees in architecture and design; this is their "day job." However, many of them are also real estate investors too.
At the end of the day, it comes down to want you want--weigh each option carefully. If you feel lost, do not be deterred. Keep pursuing your dreams and goals and have no regrets.