Quantum Leap

Ok, this is a totally abstract concept, and I know similar scenarios have been debated before, but this caught my imagination enough for me to post about it here. anyone who has seen Quantum Leap will be familiar with the idea of your consciousness time travelling and jumping into someone else's body, and I think there may have even been an episode of the show where something like this happened, but I want you to imagine what it would be like to quantum leap into yourself as a teenager. This is obviously way out there, but how do you think you would be able to cope with that, on the surface it sounds great, getting to live through it all again but with all the knowledge and skills you've developed since then, it sounds like a doddle, then again, maybe not.
In the years since you were a teenager you've grown up psychologically, and the events you experienced since then have formed your persona, what kind of impact would this have on your behaviour if one day you woke up to find yourself back as 15 year old again? What would be your initial impulses? What things would you want to go and do? What would be the first thing you try to change about your past? Would you even want to change anything about your past when you consider that the events that occurred are what have made you the person you are? If you felt the need to change events, would that mean that you are not happy with who you are or would there be other reasons for changing events?
I think some of the factors that I would find most difficult would be the way people would treat me, I was a very different person at that age, so to suddenly find myself back in that time, place and body but with the mind I have today, it would be one hell of a shock to the system. I also had a very different opinion of a lot of people back then to what I do now, as well as a very different attitude and outlook on the world, so as far as other people would be concerned, my behaviour would take a very sudden and dramatic turn, and I imagine that behaviour would not suit a 15 year old for the most part. Of course, it's also entirely possible that you would start to think and act like you did at that age the first time around, all the influences around you would be pushing you to adopt the thoughts and behaviour expected of you, and also there would be some many associations that might cause you to regress.
I'm not really getting at anything with this post, I just found it an interesting debate topic and I'd like to know what other people think would happen.