We’re posting a new Cool Friends interview today to join Inc. magazine in announcing a new book, The Knack: How Street-Smart Entrepreneurs Learn to Handle Whatever Comes Up, written by Norm Brodsky and Bo Burlingham, long-time coauthors of the Street Smarts column for Inc. Brodsky also joins us today as a Cool Friend. His most important bit of wisdom from the interview is this: “I learned that business was just the means to an end. The question is, what kind of life do you want? You want to better your life for yourself and your family.” Learn more by reading his Cool Friends interview. There’s also a slides presentation on Inc.com to accompany The Knack:10 Things Every Entrepreneur Needs to Know.