It is no great surprise, then, that humility is the single greatest and most indispensable attribute of being a team player. - Patrick Lencioni

Employees know that they ultimately pay the price when their manager doesn't get along with or cooperate with managers of other departments, leaving the staff to navigate the treacherous and bloody waters of organizational politics.

Great teams do not hold back with one another. They are unafraid to air their dirty laundry. They admit their mistakes, their weaknesses, and their concerns without fear of reprisal.

The most important part of the development process, and the part that is so often missing, is the leader's commitment to constantly "reminding" an employee if she is not yet doing what is needed. Without this, improvement will not occur.