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The Power of Optimism - Uc, Martha
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The power of optimism is hard to overestimate. It has been scientifically proven to lead to better physical and mental health, increased productivity, improved interpersonal relationships, and even greater success in life.

Produktbeschreibung
The power of optimism is hard to overestimate. It has been scientifically proven to lead to better physical and mental health, increased productivity, improved interpersonal relationships, and even greater success in life.