1. Salir de los bucles mentales, dar con ideas nuevas, ampliar horizontes e identificar nuevos objetivos. 2. Hacer amigos de forma rápida y fácil. 3. Mejorar tu influencia, tu prestigio y tu capacidad de lograr que las cosas se hagan. 4. Incrementar tus ingresos. 5. Convertirte en un mejor vendedor o jefe. 6. Gestionar las quejas, evitar las discusiones y relacionarte de manera fácil y agradable. 7. Mejorar tu oratoria y tener conversaciones más enriquecedoras. 8. Entender los principios de la psicología para que puedas aplicarlos a situaciones cotidianas.
Dale Carnegie was an American writer and teacher of courses in self-improvement, salesmanship, corporate training, public speaking, and interpersonal skills. Born into poverty on a farm in Missouri, he was the author of How to Win Friends and Influence People (1936), a bestseller that remains popular today. He also wrote How to Stop Worrying and Start Living (1948), Lincoln the Unknown (1932), and several other books. One of the core ideas in his books is that it is possible to change other people's behavior by changing one's behavior towards them.