Richie Davidson is one of the world's leading neuroscientists and was the first guy to check out monks' brains in a lab. He founded the affective + contemplative neuroscience fields and is, quite simply, a neuroscientist rock star. In this Note, we explore some of his best Big Ideas, understanding how our thoughts and behaviors affect the very structure of our brains and the emotions we feel. We'll also look at how to dial it all in.