In 1996 football coach Bill Parcells famously resigned as the coach of the New England Patriots with the parting statement, “If they want you to cook the dinner, at least they ought to let you shop for some of the groceries.” I often think of that quote when I consider the role a sales manager plays in an organization. If I had to rate the toughest jobs in the business world, I’d have to rate sales manager at (or at least very near) the top. While roles like CEO, head of operations, human...