Slackerdom

Underachievement is a funky lil thing. Though it seems to bein the eye of the beholder. Usually that beholder is society. And usually thatsociety is bent on so-called achievement corresponding with so-calledpotential. 
Society is a selfish bastard at times. Society wants peopleto contribute, for people to rise up and grease the capitalist wheels.
A lot of times underachievement is attributed to poorself-concept, self-efficacy, and/or some kind of resulting cognitiveinefficiency. Some people simply call it laziness. It's whatever.
Or somethin like that. I'd elaborate, but...
motivation's a bitch.