Living a happy life isn’t as simple as having a smile on your face all the time. We often think that our negative emotions should be minimized and repressed, but acknowledging and managing them is actually key to achieving a healthy baseline. Author and Harvard professor Arthur Brooks studies the latest happiness research across behavioral science, philosophy, psychology, and neuroscience. He shares his findings with the business school students he teaches and with the general public he writes for, and explains how to understand and manage our emotions. We cannot control our emotional responses to the world, he says, but we can learn to control how we react to them.