First, let's start with the basics: what is a professional salesman? A professional salesman is defined as someone who is able to sell products or services in a professional manner. This means that they are able to effectively communicate with potential customers, understand their needs, and then offer a solution that meets those needs. In order to become a professional salesman, you must first develop a solid, iron mind. This means that you must be able to think clearly and logically and that you must be able to control your emotions. Emotional outbursts, irrational thoughts, and impulsive decisions will only hinder your ability to sell effectively.