Depends really.
I'm a tricker ( Google it ) and peer pressure is really what pushes me to be better. I've had people "peer pressure" me into doing something i normally wouldn't even think about doing. Like when I won't go for something and people start calling me names not because I'm actually what there calling me, because it pushes you to do something you wouldn't do.
Of course it depends on what someone's pressuring you into doing.