This is a story about a guy, who like most of us, sometimes questions his
existence, measuring himself to others, not believing enough in his
abilities or his worth. Then one day, his passion outgrew his fears as he
stepped onto a stage, a stage that took him to a place beyond his self
imposed prison. Watch the faces of the judges as this guy walks out on
the stage. You can almost see what they’re thinking, based on his looks and
the fact that he’s a cell phone salesman.

Maybe this guy stopped believing in what people told him for so many
years and ultimately started listening to his passion.
http://www.maniacworld.com/Phone-Salesman-Amazes-Crowd.html