When you're in business, most of your revenue is generated by repeat customers. So it is not only important to gain customers, it is vitally important to keep them. You cannot think of customers as a one-time transaction; but rather think of them in terms of their lifetime value. In this episode of The MFCEO Project, Andy Frisella explains how to gain, maintain, and retain customers. Bottom line: if you want to move up in the world of business, you've got to learn how to follow-up and follow-through.