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It isn't what you have, or who you are, or where you are, or what you are doing that makes you happy or unhappy. It is what you think about.
It isn't what you have, or who you are, or where you are, or what you are doing that makes you happy or unhappy. It is what you think about.
Dale Carnegie was an American writer and teacher of courses in self-improvement, salesmanship, corporate training, public speaking, and interpersonal skills. Born into poverty on a farm in Missouri, h...
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