Social scientists have been investigating this phenomenon. They call it “cultural fit,” and it explains a lot about happiness. Like people, each culture has its own personality. Some cultures, for instance, are collectivist; others are individualistic. Collectivist cultures, like Japan and other Confucian nations, value social harmony more than any one person’s happiness. Individualistic cultures, like the United States, value personal satisfaction more than communal harmony. That’s why the Japanese have a well-known expression: “The nail that sticks out gets hammered down.” In America, the
  
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