Achieve exponential results by focusing on the vital few rather than the trivial many. In this modern business classic, Richard Koch reveals how the Pareto Principle (the 80/20 rule) is the key to controlling your life and your career. The principle states that 80 percent of results flow from just 20 percent of causes. By identifying and focusing on that specific 20 percent, you can dramatically increase your effectiveness and happiness while reducing your workload.