The Art Of Public Speaking About the Author Dale Harbison Carnegie was an American writer and the developer of famous courses in self-development, salesmanship, corporate training, public speaking and interpersonal skills. He is the author of the bestselling How to Win Friends and Influence People, How to Stop Worrying and Start Living and many more self-help books. J. Berg Esenwein was an American editor, lecturer and the author of popular books such as How to Attract and Hold an Audience, Writing the Short-Story, etc.