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What Is Happiness and Why Is It Important?

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in his 2002 best-selling book, Authentic Happiness. And according to a 2008-2009 survey of 450,000 Americans led by Kahneman, personal well-being did increase as income increased—but only to a point. For every 100 [scholarly] journal articles on sadness, there is just one on happiness,” bemoans Martin Seligman, Ph.D.,

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