“The pivot point in Good to Great is the Hedgehog Concept. The essence of a Hedgehog Concept is to attain piercing clarity about how to produce the best long-term results, and then exercising the relentless discipline to say, “No thank you” to opportunities that fail the hedgehog test. When we examined the Hedgehog Concepts of the good-to-great companies, we found they reflected deep understanding of three intersecting circles: 1) what you are deeply passionate about, 2) what you can be the best in the world at, and 3) what best drives your economic engine.”