As you read this article your mind is likely to wander off onto other thoughts; trouble at work, your evening plans, a mounting to-do list… and you might be all the more unhappy in life as a result of such distracted thinking.

According to a recent study in the November issue of Science Magazine, whether and where people’s minds wander is a better predictor of happiness than what they are doing. The study included more than 2,200 people around the world who agreed to use an iphone app called trackyourhappiness.

A team of Harvard psychologists contacted the participants at random intervals to ask how them how they were feeling, what they were doing and what they were thinking. The team …