You know, seeing as I was a teenager earlier on this year, I guess I can take a swing at this question. Teenagers have a strange sense of importance. As an early teen you feel like the entire world is revolving around you. You feel older than you actually are, and as such, try to do things that are actually beyond you. Coupling this with puberty and menstruation in the case of girls, the teens are a really bumpy ride.
But majority of this comes at the beginning of the teen years. My dad says that if you don't die as a teenager, then you have no reason to not live a long life. What he means is that teenagers tend to do the wildest stuff but once you begin to move past that age, you begin to get wiser and make wiser decisions. When I was a teenager, I was unruly, arrogant and an all-round pain in the ass. It wasn't anyone's fault, I thought I was the center of the universe and so I misbehaved. But with time I learned how big this world really is and how small I am in it and it had a kind of humbling effect on me. The closer I got to twenty, the more understanding I became because I began to actually listen to what other people had to say and I learned a lot as I did. I'm twenty right now. By March next year I'll be twenty one and I think I can call myself wise. Or at least wiser than I once was. So that's what my teen years taught me. Through mistakes and experiences, I became wiser and I think its going to be an upward slope from here on.