Richard Koch (@RichardKoch8020) is an entrepreneur, investor, former strategy consultant, and author of several books on business and ideas, including four on how to apply the 80/20 principle in all walks of life.

His investments have grown at 22 percent compounded annually over 37 years and have included Filofax, Plymouth Gin, Belgo, Betfair (the world’s largest betting exchange), FanDuel, and Auto1. He has worked for Boston Consulting Group and was a partner at Bain & Co. before joining Jim Lawrence and Iain Evans to start LEK, which expanded from three to 350 professionals during the six years Richard was there.

In 1997, Richard’s book The 80/20 Principle reinterpreted the Pareto Rule, which states that most results come from a small minority of causes, and extended it beyond its well-known application in business into personal life, happiness, and success. The book, substantially updated in 2017, has sold more than a million copies, been translated into roughly 40 languages, and become a business classic. It was named by GQ magazine as one of the top 25 business books of all time.