Most small businesses pour nearly all of their marketing budget into finding new customers while overlooking the people who already know, trust, and buy from them. John Jantsch explains why onboarding, repeat business, referrals, and customer reactivation often deliver the highest return on investment—and how a simple customer experience system can create sustainable growth. Learn how to build a customer engine that increases retention, generates referrals, and turns happy customers into your most effective marketing asset. If growth has stalled, the opportunity may already be sitting in your customer database. 00:00 Introduction 01:16 The Half of Marketing You