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What Is Happiness and Why Is It Important?

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in his 2002 best-selling book, Authentic Happiness. Many studies bear out that once basic needs (shelter, nutrition, security, adequate medical care, etc.) 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. “It Working It Out.

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