Wow. Was that legitimate? Enjoy your sister, let her be 10, and let her have her own mind. If she wants to major in journalism 8 years from now, so what? Maybe she'll write a story about your overbearing control and god complex and immortalize your 'best' qualities that apparently prompted the original post, which is one of the most selfish things l've ever read on a message board. Maybe it reflects your own maturity, as others suggested, in which case my words above are too harsh and l apologize. Or I hope it was in jest or you were in the heat of passion after an argument.
Regardless, sibling relationships can be difficult but they are also a blessing. Appreciate her for what she is today and tomorrow. If you're so worried about yourself then move far away for college and beyond, because if you continue to try to control her life decisions she'll undoubtedly continue to spit in your face, and worse.
Let her be. Someday you may need her, too, for something other than telling her what to do or who to be.