As a business coach for 18 years, I’m constantly reading business books to find the best new ideas for my clients. Most are built around one idea, easily speed-read. Some need to be read thoughtfully, with many ideas to use. A rare few deserve to be studied…dog eared pages, highlighted, written in the margins, re-read annually. “Pinnacle: 5 Principles…” is such a book. This is the best business operating system book for entrepreneurial leadership teams who have moved beyond the prepackaged, cookie-cutter system others offer.