Each has its drawbacks and often they are associated with the exterior. For example, too skinny people want to gain weight, and full - reset. It's real. Some teens want to look older, and I think it's unnecessary and a waste of time. I would probably want to change something internal. After all these changes of hair color, fashionable clothes, new haircut - it's just an image. I would probably want to be less lazy, less shy. With these shortcomings, I'll fight. And of course we would like to establish a relationship with their parents, to make them even better. The rest is nonsense. If you want to change something in yourself, do not be afraid to change. It's cool!