Today I welcome my old friend, world-renowned neurosurgeon and Chief Medical Correspondent for CNN, Dr. Sanjay Gupta. Join us for a conversation where we discuss the amazing 3-pound mass we call our brain -- does it hold the answers to how we think, feel and imagine?  Is the brain the center of everything we believe is reality? And is that where the mind resides? The answer may not be what you expect. Come with me, as we explore the mysterious power of the mind.