Meet Tom Shadyac, the Hollywood director who walked away from millions—and is now on a mission to answer the questions, "What's wrong with our world, and what can we do about it?" He spoke with Oprah during the final season of The Oprah Show to shed light on this topic. Discover why Tom moved out of his mansion and into a mobile home.

And don't forget to set your DVR now to record this week's "Super Soul Sunday" featuring Tom and his documentary, I Am. "Super Soul Sunday" airs Sunday, January 1, at 8 a.m. and 12 p.m. ET/PT.