Change Yourself.

I recently asked a group of my friends, via text message, what one singular thing they would change about themselves. The answers were as follows:
My work ethic.
My inability to handle conflict.
My height.
My work ethic.
My work ethic.
My people skills.
My fear of the future.
My appearance.
I found some of these answers surprising at first, but in hindsight realized how normal these wants are in people. For example, "my height" and "my appearance" were fairly typical responses that I expected from more people actually, because our society tends to make people feel like they do not appear the way they should to be happy. To my surprise this was actually a fairly low desire and most people wanted to change their work ethic or their people skills, with one person wanting to change their stress levels. The stress response was also typical of the average teenager, especially a busy IB senior; however, I found the work ethic response most atypical of the teenager. Most teenagers, in my opinion, don't really seem to care about the work that they do, as long as they get something turned in and get good enough grades to get into college. These individuals, in my opinion, show wisdom far beyond their years to ask for something so basic and something that does not truly benefit them but the person whom they owe work. In contrast, those who asked for better social skills asked for something that was purely for their benefit, but could potentially lead to the happiness of others. I found it very interesting that the two who asked for better social skills are also currently in a relationship with one another. My main gripe with most responses, is that besides the two based off appearance, every other request is entirely possible to correct. It just takes a little willpower. So my question is, if you want to be different, why haven't you changed?