One of the nicest comments to hear from customers is, "we want you to be here for us". They sometimes preface it with, "we shop here because...we want you to be here for us". While it may not keep you in business, or cause you to become profitable, it is an important first step.
The goal is to find out why you are indispensible to them. Let everything else fall to the wayside. Becoming indispensable to your customers means you provide them with products, or a feeling, that causes them to go out of their way to maintain. There are cheaper places to shop. There might be more convenient places to shop. These thing's don't matter as much when your are becoming indispensable.
They need you, as much as you need them. How are you becoming indispensable (absolutely necessary) to your customers?