You're being too hard on yourself. Even if you did run away, I think it was meant to be. If you stayed, you would have been killed with all the other airbenders.
[to Zuko]: You know what the worst part of being born over a hundred years ago is? I miss all the friends I used to hang out with. Before the war started, I used to always visit my friend Kuzon. The two of us, we'd get in and out of so much trouble together. He was one of the best friends I ever had, and he was from the Fire Nation just like you. If we knew each other back then, do you think we could have been friends too?
Your destiny...this is incredible! You will be involved in a great battle! An awesome conflict between the forces of good and evil! A battle whose outcome will determine the fate of the whole world!
Aang
Yeah, yeah, I knew that already. But did it say anything about a girl?
Not for long. I'm gonna prove to them Aunt Wu's predictions are nonsense. (he turns to a villager) Hey, you! I bet Aunt Wu told you to wear those red slippers, right?
VVillager
Yeah. She said I'd meet my true love wearing red slippers.
Sokka[slyly]: Uh-huh. And how many times have you worn those shoes since you got that fortune?
VVillager
Every day.
Sokka[angrily]: THEN OF COURSE IT'S GONNA COME TRUE!
Villager[excitedly]: Really?! You think so?! I'm so excited!
Why didn't I think of that? At night, you can teach me whatever moves you learned from Master Pakku. That way, you have someone to practice with and I get to learn waterbending. Everyone's happy!
Oh, how could I ever forget you? [Changes face to that of an angry-looking man.] ONE OF YOUR PREVIOUS INCARNATIONS TRIED TO SLAY ME! It was eight or nine-hundred years ago.
Aang
I didn't know that. Why did he...or I...try to kill you?
KKoh
[Changes face to that of Ummi, Avatar Kuruk's wife.] Oh, it was something about stealing the face of someone you loved. [Changes face to that of a screaming baboon in an attempt to scare Aang.] HA HA HA! [It doesn't work and Koh keeps talking, bringing his fanged maw right up behind Aang's ear. ] Of course, that's all behind us. Why should I hold a grudge against you for something in a past life? After all, you're a different person now. You've come to me... with a new face.