Kaika, where do you get the "shouldn't have lived this long" thing? You haven't lived very long at all, especially at age "10" so you can't really say that until you get to be an old woman of 90 :-)

I've been reading a really great dream book, Dream Thinking, by Alex T. Quenk and Naomi L. Quenk, http://www.human-nature.com/odmh/dreamsb.html it's old (I've decided to read all the books in my house and either "keep" them or be finished with them and give them away before I buy new ones) and it has a couple of ways to go about looking at dreams.

The first way would point out that your dream takes place in your past and doesn't really have anything/anyone from your real life so is about an "enduring" issue. This is an old tried and true thing you're working with, is subjective (about your relationship to yourself rather than your relationship to the outer world, outer world would have a definite "real" situation and be "sharper" not vague like your dream). The next thing they talk about is whether it's a confirmatory dream or compensatory; a confirmatory dream would say "yes" to some real thing happening in your life right now. But since there's no real event this dream is about, it's compensatory: I think your, "you can't treat me like this because I'm 10, I'm not a little kid anymore" talking back to the guy is telling you you can take care of yourself (it's compensating for your awake-life/conscious fears that you can't take care of yourself). You are telling yourself that you can take care of yourself, that you're okay on your own.

Have you been thinking about moving or taking a big step? This dream is probably trying to help you realize that you are more competent than you feel and that you'll be okay if you take the "next" step.