El método de ventas original de Napoleon Hill que dio origen a uno de los más grandes referentes para el éxito y los negocios a nivel mundial. Con La ciencia de las ventas, un curso dedicado a los alumnos de la Universidad de Extensión LaSalle, en Chicago, en 1913, Napoleon Hill demostró al mundo que no sólo era un talentoso escritor y orador, sino un hombre dedicado en cuerpo y alma a un solo propósito: enseñarles a las personas cómo vender, ya fuera productos, servicios, ideas o, sobre todas las cosas, a sí mismas. Aquí encontrarás las herramientas que necesitas para convertirte en un vendedor exitoso, sin importar la naturaleza de tu negocio. Su método y principios están basados en la experiencia de algunos de los líderes más influyentes de comienzos del siglo pasado, cuya guía te ayudará a negociar sin fricciones, promover tus ideas de forma eficaz, crear estrategias para emprender y cerrar ventas de manera profesional, así como identificar y desarrollar las cualidades que todo vendedor debe tener, entre otras valiosas enseñanzas. ENGLISH DESCRIPTION The world needs new leaders and is rich with opportunities for professional salespeople who are creative, energetic and desire to benefit others. You can be one of them! Many followers of Napoleon Hill often miss the fact that he was not only a gifted writer and speaker, but also a man who made a living teaching other people how to sell. In 1913, Hill began working for the LaSalle Extension University in Chicago, giving him valuable insight into what he liked doing and what he did well: teaching people how to sell ― products, services, and above all, themselves. This book will give you the tools you can use to effectively sell yourself and your ideas. Learn: - The principles of practical psychology used in successful negotiation - How to create intelligent promotion in order to succeed - The strategy of professional salesmanship - The qualities the professional salesperson must develop - Autosuggestion: the first step in salesmanship - About the Master Mind - Concentration - Initiative and Leadership - How to qualify the prospective buyer - How to neutralize the prospective buyer's mind- The art of closing the sale The ability to influence people without irritating them is the most important trait in salesmanship. This book is devoted to an analysis of the principles of psychology through which anyone may negotiate with others without causing friction. The principles were conceived from the life experiences of some of the most successful leaders in business, industry, finance and education known to the American people in the first half of the 20th century. They are also the principles by which one may win friends and influence people without unnecessarily flattering them.