Decisive people have no idea how lucky they are to be spared the kind of second-guessing that can lead to sleeplessness, queasiness and general obsessiveness. But the rest of us now have a secret weapon against waffling: soap. Psychologists at the University of Michigan found that washing your hands with soap and water can help you stop questioning your judgment. The study authors explain that the act of washing up serves as a powerful metaphor
of "cleaning the slate" and helps us mentally wipe away doubts and misgivings.