Carl Sewell is America's best auto dealer. Every chapter of his book offers practical advice for your business, whether it's selling cars, fashion, or banking.

Sewell recommends focusing on repeat customers, as focusing on one-time sales makes business unsustainable. He convincingly demonstrates that to retain customers, you need to rethink not only service per se, but also work organization, compensation, cleanliness, landscaping, and many other details.