The content provided does not contain specific principles from the book 'How to Win Friends and Influence People'. However, some of the key principles from the book include: showing genuine interest in others, remembering people's names, encouraging others to talk about themselves, and making the other person feel important. Please refer to the book for a comprehensive understanding.
Written over 80 years ago, this is a book that is as relative today as it was when it was first writ...
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