It's My Worst Fear
It's my worst fear because it will happen, the only way to keep from aging is to die young (and I don't want that, either).
I'm in my late teens, and I already feel old. I really miss the way my life was when I was younger. It's scary to think that not only will I never get to be a kid again, someday I'm going to get truly old. I'm a dancer, so being too old to dance is the worst thing I can imagine, and I know it has to happen someday.