All successful sales come from the customer realizing that something of great value is being provided. Therefore, to be an entrepreneur, a person should be searching for something that many people will assess as having great value. In other words, look for something you can design once, and sell over and over again to many people. Techniques such as cold calling may be more or less efficient than the "new" techniques such as social media, mobile marketing, and so on. But none of that matters until you have a product/service that resonates with customers. As a salesperson, you are used to being told "Sell what you have." But as an entrepreneur, you need to be much more interested in "Having what sells."