To Sell Whereas telling deals almost exclusively with facts,selling also involves feelings and attitudes.You don't have to have the word “sales”in your job title to be a salesperson.. In fact,everyone needs to be a persuasive communicator at one time or another. Convincing the boss that you deserve a raise or more responsibility calls for selling. So does getting approval for a new project, motivating employees to work their hardest, and convincing a supplier that you need the shipment today.It doesn't take much imagination to see that the success or failure of a career depends on the ability to persuade others. To Sell Whereas telling deals almost exclusively with facts, selling also involves feelings and attitudes. You don’t have to have the word “sales” in your job title to be a salesperson. In fact, everyone needs to be a persuasive communicator at one time or another. Convincing the boss that you deserve a raise or more responsibility calls for selling. So does getting approval for a new project, motivating employees to work their hardest, and convincing a supplier that you need the shipment today. It doesn’t take much imagination to see that the success or failure of a career depends on the ability to persuade others