<p>They say you are born with it. That to be good at sales you have to have the gift of the gab. Sales guru Paul Clark believes that sales are a natural part of our everyday life. We use our sales skills in everything we do. Whether we are trying to persuade a wife, a boyfriend or a best friend to go out for a beer at the weekend. Or negotiate our way out of a parking ticket. We all do it, all the time. So how do you sell and get paid for the ple...