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In 1906, Vilfredo Pareto, an Italian economist observed that eighty percent of the society’s wealth was owned by twenty percent of the population. He developed a mathematical formula to explain this unequal distribution of wealth in the society, which later came to be known as the Pareto principle or the 80/20 principle. In The 80/20 Principle: The Secret of Achieving More with Less, Richard Koch explains how one can apply this rule even in life and in one’s career. By concentrating on giving the best into the twenty percent of efforts required, one can achieve eighty percent by spending much less time, energy, and resources. The author encourages his readers to increase their effectiveness by applying the 80/20 principle in their lives through this international bestseller. Born in 1950, Richard Koch is a graduate of Oxford University and an MBA recipient from the Wharton School of the University of Pennsylvania. He has been a manager at Boston Consulting Group and then a partner at Bain and Company, and finally started his own management consulting firm, L.E.K. Consulting. Koch is a businessman and also is author of several books on how to achieve more in all walks of life. His other works include Living The 80/20 Way: Work Less, Worry Less, Succeed More, Enjoy More, and The Power Laws, Smart Strategy, along with Superconnect: The Power of Networks and The Strength of Weak Links, and The Star Principle: How It Can Make You Rich.