How to Win Friends and Influence People is a self-help book written by Dale Carnegie, published in 1936. Over 15 million copies have been sold worldwide, making it one of the best-selling books of all time. In 2011, it was number 19 on Time Magazine's list of the 100 most influential books.
In 1934, Leon Shimkin of the publishing firm Simon & Schuster took one of Carnegie's 14-week courses; afterward, Shimkin persuaded Carnegie to let a stenographer take notes from the course to be revised for publication. The book sold exceptionally well from the start, going through 17 editions in its first year alone.