David Allen interviewed Daniel Levitin several years ago after the publication of The Organized Mind. In this interview, David talks with Daniel about his new book, Successful Aging: A Neuroscientist Explores the Power and Potential of Our Lives. They begin by discussing the neuroscientific basis for GTD. Then Daniel explains that there are two principles from GTD that are crucial for successful aging. They are 1) externalizing your memory, and 2) living conscientiously. He says that when you become more conscientious, you are rewiring your brain in beneficial ways. They also talk about how learning new things is helpful for your brain.