What does the world need most? What is designer Nate Berkus most grateful for? Where does he feel most at home? Watch as Oprah and Nate go soul-to-soul in another round of life's biggest questions.

Where does spiritual teacher Eckhart Tolle feel most at home? Is he always happy? Watch this lightning round of Soul to Soul questions and see which answer made Oprah laugh out loud.

Best-selling author and regular Oprah Show expert Dr. Robin Smith reveals her secret strength, her greatest fear and more in this round of Soul to Soul.

What is don Miguel Ruiz's definition of God? What does he think happens when we die? What's the one thing he thinks the world needs more of? Find out as Oprah and don Miguel go soul to soul!