Dale Carnegie (Nov. 24,1888 - Nov. 1,1955) was an American writer and lecturer, and the developer of courses in self-Improvement, Salesmanship, Corporate training, Public speaking, and Internal personal skills. One of the core ideas in his books is that it is possible to change other peoples behaviour by changing ones behaviour towards them. All of his books are international best seller. Best selling book on Human Relations. The book focuses on Peace and Happiness, Fundamental Techniques i