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But to understand the causes and effects of happiness, researchers first need to define it. Many of them use the term interchangeably with “subjective well-being,” which they measure by simply asking people to report how satisfied they feel with their own lives and how much positive and negative emotion they’re experiencing.
In her 2007 book The How of Happiness, positive psychology researcher Sonja Lyubomirsky elaborates, describing happiness as “the experience of joy, contentment, or positive well-being, combined with a sense that one’s life is good, meaningful, and worthwhile.”
That definition resonates with us here at Greater Good: It captures the fleeting positive emotions that come with happiness, along with a deeper sense of meaning and purpose in life—and suggests how these emotions and sense of meaning reinforce one another.
In addition to making us feel good, studies have found that happiness actually improves other aspects of our lives. Here is an overview of some of the good stuff that research has linked to happiness.
Happiness is good for our health: Happy people are less likely to get sick, and they live longer.
Happiness is good for our relationships: Happy people are more likely to get married and have fulfilling marriages, and they have more friends.
Happy people make more money and are more productive at work.
Happy people are more generous.
Happy people cope better with stress and trauma.
Happy people are more creative and are better able to see the big picture.