" Whatever its other purposes, positive emotion is strongly correlated with good health and a longer life expectancy. A 2010 review of dozens of studies concluded that there are several pathways through which positive emotion exerts its beneficial effects—your hormonal, immune, and anti-inflammatory systems.[34] In one study health experts in London collected data on the well-being of hundreds of men and women between the ages of forty-five and sixty.[35] They assessed their subjects’ positive emotion using a method designed by the Nobel Prize–winning psychologist Daniel Kahneman, author of Thinking, Fast and Slow. Kahneman realized that you don’t get a very accurate picture by asking people if they are happy in life. Instead, you tend to get an answer that is reflective of how they feel at that moment, or of whatever event has just happened, or whether the sun is out. What they are reporting is a momentary feeling and not their general state. "
― Leonard Mlodinow , Emotional: How Feelings Shape Our Thinking
![Leonard Mlodinow quote : Whatever its other purposes, positive emotion is strongly correlated with good health and a longer life expectancy. A 2010 review of dozens of studies concluded that there are several pathways through which positive emotion exerts its beneficial effects—your hormonal, immune, and anti-inflammatory systems.[34] In one study health experts in London collected data on the well-being of hundreds of men and women between the ages of forty-five and sixty.[35] They assessed their subjects’ positive emotion using a method designed by the Nobel Prize–winning psychologist Daniel Kahneman, author of Thinking, Fast and Slow. Kahneman realized that you don’t get a very accurate picture by asking people if they are happy in life. Instead, you tend to get an answer that is reflective of how they feel at that moment, or of whatever event has just happened, or whether the sun is out. What they are reporting is a momentary feeling and not their general state.](/image/2531094.jpg)