I think I remember one of the things he advised was to make people feel like they were making a choice.
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also highly reccomend this book: Never Split the Difference: Negotiating As If Your Life Depended On It
https://www.amazon.com/Never-Split-Difference-Negotiating-De...
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Here is his TED Talk
https://www.youtube.com/watch?v=MjhDkNmtjy0
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How to Win Friends and Influence People
How to Win Friends and Influence People is a self-help book written by Dale Carnegie, published in 1936. Over 30 million copies have been sold worldwide, making it one of the best-selling books of all time https://en.wikipedia.org/wiki/How_to_Win_Friends_and_Influen...