"A neurotic is a man who builds a castle in the air. A psychotic is the man who lives in it. A psychiatrist is the man who collects the rent." - Jerome Lawrence, famous American author and playwright.
Summary: Stating is simply, there are two types of people, the personality disorder and the neurotic. The neurotic says "it's my fault." The personality disorder says "it's your fault." One takes responsibility for their behavior and the other doesn't. The neurotic will take responsibility for a problem and can try to fix it. The personality disorder will unconsciously or consciously blame others for their predicaments and wish the world would stop screwing them. In business, the neurotic will work with you, admit mistakes and may try to fix problems. The personality disorder will blame others in their organization for their misfortunes and can hold grudges. Either type make good allies of salespeople. In reality, we are all an unequal combination of the two.
Sales Tip: Never cross your arms while you are talking with someone. This is bad body language and transmits an unconscious negative message. Also, try not to use lead-in phrases like "To tell you the truth" or "To be honest." While we all are tempted to use phrases like this to create a more confidential air, they really imply that previously we weren't telling the truth. This has negative effects on both the conscious and unconscious person.