Sales — when done right — is more than a job. It is an art. It is a high-wire act. It is, as Arthur Miller immortally said, being out there “on a smile and a shoe shine.” It is learning the product you are selling, learning it so well that you can describe it while doing a pirouette of smiles for the customer and talking about the latest football scores. It is knowing human nature so well that you can align the attributes of your product or service cleanly with the needs and wants of your customers.
At its best, selling is taking a doubt and turning it, jujitsu style, into a powerful push. Selling is making the customer feel better about spending money — or investing it — than he would have felt by keeping his wallet zipped.
Source: New York Times: The Sales Profession: Attention Must Still Be Paid