As a parent, you see it all the time. Overnight, your teen has a new profound interest in the latest gadget or fashion style you’ve never heard of. That iPhone 4s you gave them last year is an “embarrassment” to have in public and now they want purple highlights in their hair. It all becomes so clear when their BFF (best friend forever) comes over to visit and proudly displays their new hair style and an iPhone 5 with a customized case. Close friends can exert a tremendous amount of influence even if they’re not trying to do so. We are social creatures and those we choose to spend our time with will, to a certain degree, shape our opinions, actions, and interests.