Where are you learning to dance? Some of the chain schools start right off the bat with, "you are a great dancer, you could be a professional." I was told that exact thing when I started. Dancing as a child does not translate into becoming a good ballroom dancer. That being said, there is no reason why you can't become a 'professional' however be aware that you probably won't be able to make a living at it, and as the others have said it is a long haul if you want to be a credible good dancer.