Future

So I've been thinking alot about my future, and I'm sorta scared... I don't know what I'm gonna do with my life! What if my dreams will just be dreams and I'll become a cleaner or something similar. Why did I have to go grow up so fast? I mean I'm still the little girl in seventh grade. Do all teenagers have this problem? I wanna get into media you know, singing dancing acting, stuff like that. But what if I don't get my grades up? What then? Am I gonna go to tenth grade? I really don't wanna do that. It's not my thing. Oh well, I'll find something for me. But right now I really have to focus on school! Get them grades up! What do you think?