I do not want to diminish the power of this sermon by saying anything at all. Efrem Smith was a coworker of mine way back when we were both young... I believe it was in 1995 when we were both 30ish. When he spoke at Wheaton College last week he knocked it out of the park.
It's short, but if you don't have time for the whole thing, just watch the last minute. If you are a Christian, it will challenge you and possibly change your life.