For the millions of Americans that celebrate Thanksgiving, it's a time when a lot of us reflect on the things and the people in our lives that we appreciate. But according to Dr. Laurie Santos, psychology professor at Yale and host of the podcast, The Happiness Lab, a practice of gratitude can improve our lives year-round. Host Brittany Luse chats with Dr. Santos about the surprising science of how gratitude can affect our brains — and how it leads us to be more generous with our future selves.