Dale Harbison Carnegie(1888-1955) Why is an American writer and lecturer and the developer of famous courses and self improvement salesmanship corporate training public speaking and interpersonal skills born into body on a farm in Missouri he was the first of the best selling how to Win friends and influence people(1936),How to stop worrying and Start Living(1948) and many more self help books. J.Berg Esenwein(1867-1946)What is an American editor lecturer and author of how to attract and hold an audience
