For instance, optimistic undergraduates tend to earn higher grades and are less likely to drop out of school. Optimistic young adults stay healthier throughout middle age and, ultimately, live longer than pessimists. Optimists are more satisfied with their marriages. A one-year field study of MetLife insurance agents found that optimists are twice as likely to stay in their jobs, and that they sell about 25 percent more insurance than their pessimistic colleagues. Likewise, studies of salespeople in telecommunications, real estate, office products, car sales, banking, and other industries have
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