"A good deed, "said the prophet Mohammed, "is one that brings a smile of joy to the face of another." Why will doing a good deed every day produce such astounding efforts on the doer? Because trying to please others will cause us to stop thinking of ourselves: the very thing that produces worry and fear and melancholia."

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Source: Dale Carnegie (2004). “How to Stop Worrying and Start Living”, p.244, Simon and Schuster

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Dale Carnegie

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Dale Carnegie was a pioneering author and lecturer known for his work on personal development and effective communication, particularly through 'How to Win Friends and Influence People.'

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