The book celebrates positive thinking and encourages people to change their outlook when they can't change the situation they are in. A unique blend of psychology and business strategies, How to Win Friends and Influence People lays down fundamental ways in which people can avoid arguments and work together more effectively. Well researched and documented, with lessons from some of the greatest American leaders, the book takes simple ideas like being humble and applies them to the business setup. Since its release, the book has sold more than 15 million copies worldwide, with its timeless advice on scaling heights in one's professional as well as personal life.