I think playing a sport is really good for teenagers growing up. It's really good if they play on a team or for the school. And they should try to make as many friends as possible or a few very close friends. Teenagers also want independence from their parents because they are growing up.
Teenagers also have a increased sensitivity from criticism from other people. They also come to see themselves as more sophisticated and well-mannered. When you compare adolescents from children they would think simple minded and predictable. They also become more interested in learning their personalities.