Teenagers whine about it constantly. Office mates step out multiple times a day to Starbucks to escape it. Parents die of it every night as they try to get small children to fall asleep. We use the wo...
In a 2010 study called “A Wandering Mind Is an Unhappy Mind” (gulp), Harvard psychologists Matthew Killingsworth and Daniel Gilbert developed an iPhone app to survey the thoughts, feelings, and action...