"I know men and women can banish worry, fear and various kinds of illnesses, and can transform their lives by changing their thoughts. I know! I know! I know! I have seen such incredible transformations performed hundreds of times. I have seen them so often that I no longer wonder at them."

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Source: Dale Carnegie (2010). “How to Stop Worrying and Start Living”, p.172, Simon and Schuster

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Dale Carnegie

Author, Speaker

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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