Book excerpt: El camino facil y rapido para hablar eficazmente -- the fast and easy system to manage daily communications. It is based on 70 years experience of the Dale Carnegie Course on Human Relations, whose aim is to rule out the trivial and go directly to the heart of the process of communication. The real-life example from leaders in the fields of businesses, entertainment, sports, politics, and more offer a wide range of experiences. Each chapter is solidly based on Dale Carnegie's three basic principles: know what to say, say it with conviction, say it clearly and plainly.