What must i do to become a professional ballerina?

I am currently fifteen years old, and have been dancing for about 4 years. I have been doing ballet for two years. I work hours on end at ballet, and have taken professional classes for about 8 months. I would like to know if there is any possible way for me to become a ballet dancer? I am already on pointe, and everything. I just want to know if i could become a professional dancer for baller? Im just now headed into 10th grade too. And at the end of next school year i will be doing ballet lessons 4 hours a day at a professional studio. So i hope this information helps you all answer my question. I just want a check list kind of, to see what i must do daily?