The 80/20 Principle"READ THIS BOOK AND USE IT." TIM FERRISS Millions of highly effective people have become more successful by understanding the simple fact that 80% of your results come from 20% of your efforts. All you have to do is identify the 20 percent that leads to 80 percent. The 80 20 Principle shows you how. Richard Koch's million copy selling global bestseller is now completely revised and updated, and more powerful and essential than ever. He reveals how the