The best predictor of future behavior is past behavior. Am I going to work on that personal project I’ve been talking about for months, or am I going to watch hours of Youtube and decide I deserve a no-floss day before falling asleep? In social psychology we’ve learned that the best guess for how many hours you will spend studying for an exam does not come from you, but rather from your good friend. Weirdly, our friends see us more objectively than we see ourselves. They see us simply– without considering our motivations, our hopes and dreams, our deep fears! They just see what we actually do… Our data is…