Here is my watch list for the seven deadly signs of salesperson arrogance:

1. “Our product sells itself”

2. “The only people on our sales team who matter to me are my superiors or at least my equals”

3. “Who cares that our competitor’s accounting manager is afraid they’ll be taken over and is out looking for a job?”

4. “I don’t need to walk our plant. Leave that to those grunts in manufacturing.”

5. “You’ll never learn a thing from a competitor weaker than you.”

6. “We can always rely on X for reference. I may not have talked with him for a few months, but he will never forget how we saved his bacon two years ago..”

7. “Customer complaints don’t matter. Those e-mails are just written by oddball cranks.”