You know stuff. And I think you should give it away.
Knowing stuff is how you got where you are, by possessing knowledge and skills that are valuable to your company and your customers. The information you posses and how you use it is your "inventory." This is especially true if you are in a service business like law or accounting, but also applies to trades and retail.
So why give it away?
Because that is the only way potential customers will come to believe that you know what you are talking about. By "showing what you know" your customers will have the opportunity to sell themselves on your value. When they do pick up the phone to call you they will already be ready to do business with you. Half the sales job will be done in advance.
How can you give away your knowledge? It is easier than ever. Publish a blog and add content regularly. Write articles for trade journals. Publish a newsletter for clients and send it to prospects, too. Look for speaking engagements. Any chance you can find to demonstrate how good you are at what you do.
Giving away information that normally costs money may seem counterintuitive. Many people fear they will share too much and thereby negate the need for a customer to call. Trust me. Those who will contact you are the ones who recognize talent and skill and are willing to pay for it.