Social Peer Pressure :)?:(?

Most of my colleagues talked about the negative sides of peer pressure, however peer pressure isn't all bad, like everything else it has it's positive aspects. If a kid is failing all of his classes and his friend/brother seems to be exiling he/she will feel pressured to improve academically to be on par with said friend/brother. If a kid is smoking weed all the time, and one of his friends tries to get him to stop that is peer pressure, but would you consider that a bad thing? I know many of my classmates wouldn't, Tim gave an example of how he tried to get his friends to stop smoking but they wouldn't listen so he met new friends that were more positive (for lack of a better word), that was unfortunate, however I went through the same thing recently with one of my close friends however the message did get through to him, and he did stop smoking. His grades improved, his relationship with his father improved, pus he skipped death. So is peer pressure bad? It doesn't always have to be, heck many of you (step up kids)are guilty of peer pressure in your blogs. The little messages about having to be yourself, being your own person, being a leader not a followers, you are telling someone how to behave, telling them how to live. But are your messages negative? Of course not