http://www.ted.com Pastor, philanthropist and author Rick Warren reflects on how the success of his book The Purpose-Driven Life triggered his own crisis of purpose. What should he do with this unanticipated wealth and attention? Warren uses his own story to explain the central tenet of his teaching: that the antidote to spiritual emptiness is recognizing what we have been given -- wealth, creativity, talent -- and using those gifts to make the world a better place.