A Practical Look at a Key Skill that Can Increase the Value of Your Negotiations by 15%. Why do experts say that preparation is one of the single most important negotiating skills, and how can you do it more effectively and enjoyably? In this immediately and lastingly useful talk, we get answers as participants develop a valuable preparation tool they can use any time, anywhere. And yes, we’ll also discover what the most important task is and learn how to do it well.