One of the world’s most popular authors of self-help books, Dale Carnegie’s bestselling works and immensely enlightening courses have helped millions improve themselves over the years. Carnegie rose to fame when he wrote about ways to overcome one of the most common fears of man: Talking in public. His advice, that has included never criticizing, complaining or condemning another person, giving sincere appreciation to others, banishing worry, developing self-confidence and so on, have great relevance for those who wish to improve themselves and their professional lives.