A shining talent like dancing or acting is hard to hide, but a true life purpose can be tougher to identify. "This happens all the time," Oprah says to Bishop T.D. Jakes in this video clip from an episode of "Oprah's Lifeclass: The Tour." Bishop Jakes says that yes, being good at something doesn't mean it's your calling. "You must understand that the purpose is an underlying chemistry that makes you live your life," he says. "Oprah's Lifeclass" airs Sundays on OWN.