Such contradictions arise all the time. If you ask people which makes them happier, work or vacation, they will remind you that they work for money and spend the money on vacations. But if you give them a beeper that goes off at random times, and ask them to record their activity and mood each time they hear a beep, you’ll likely find that they are happier at work. Work is often engaging and social; vacations are often boring and stressful. Similarly, if you ask people about their greatest happiness in life, more than a third mention their children or grandchildren, but when they use a diary to record their happiness, it turns out that taking care of the kids is a downer—parenting ranks just a bit higher than housework, and falls below sex, socializing with friends, watching TV, praying, eating, and cooking.