Caroline Banton has 6+ years of experience as a writer of business and finance articles. She also writes biographies for Story Terrace. Andy Smith is a Certified Financial Planner (CFP®), licensed ...
Opinions expressed by Entrepreneur contributors are their own. It is an old business adage: About 20 percent of your customers produce 80 percent of your sales. In my book 80/20 Sales & Marketing, I ...