"Happiness doesn't depend on any external conditions, it is governed by our mental attitude."
Dale Carnegie (1888 - 1955)
Dale Breckenridge Carnegie (spelled Carnagey until c. 1922) (November 24, 1888 – November 1, 1955) was an American writer and lecturer and the developer of famous courses in self-improvement, salesmanship, corporate training, public speaking, and interpersonal skills. Born into poverty on a farm in Missouri, he was the author of How to Win Friends and Influence People (1936), a massive bestseller that remains popular today. He also wrote How to Stop Worrying and Start Living (1948), Lincoln the Unknown (1932), and several other books.
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