Last week, I wrote about the worst hiring experience I ever had, and how it ended up costing my company $4 million in lost revenue – the equivalent of a luxury penthouse. It was an expensive learning experience. But since then, I’ve uncovered a few things about what NOT to do when hiring a new sales rep. Here are 10 common hiring mistakes I made as a sales manager – as well as how to fix them and hire the right kind of salesperson.