Top choice is voice actor cause I love cartoons. Next is either director or comic book artist just cause give me the power to influence others without being influence by fame and lack of privacy like you said.
I would want to be writer, because I don't want to be overphotoshopped and critiqued every time I left my house because 'Omg she has another boyfriend' or 'I think she got a boob job? What about her nose?' or be hated forever like Kristen Stewart despite her success (I don't like her but, you know, she's a good example) and stuff, writers are less hated, usually.
I will definitely be famous writer one day. But I am also very artistic, though I could be actress as well. Plus I have very broad imagination, I always think about my own movie scrips and ideas for myself and I have the weirdest and funniest dreams that can be turned into very good movies, thus I'd be director as well. What about musician, I was singing all my life, I had music lessons in childhood and I've been told that I have strong voice, but I think that I still need working on it.
An athlete or a musician. I'm someone that likes to work physically with my body. That's doesn't mean there isn't any sort of mentality involved with being a musician or an athlete, because that's FAR from the truth.