Have you read Patrick Lencioni's best-seller The Five Dysfunctions of a Team?   I find it to be a terrific guide for creating great leadership, teamwork, and group cohesion, but I also imagine where the most doubts are raised.  Below are some of the more controversial behaviors that Lencioni encourages - along with my brief explanation about its purpose, value and importance.
 

1.      Team members are passionate and unguarded in their discussion of issues.

We think we want and encourage such debate, but how often do meetings instead involve polite exchanges, quiet attention, and only cautious questioning?  A truly provocative and open discussion makes it possible to learn about problems, ask for details, offer ideas, and present challenges.  All of which ultimately improve decision making and problem resolution.  If your meetings are ruled by polite behavior, chances are your team is not fully engaged.
 

2.      Morale is significantly affected by the failure to achieve team goals.
Consider high-morale as the workplace equivalent of high self -esteem.  In neither arena can the sense of self-worth be given, instead it must be achieved.  While we want our teams to experience high morale - having lowered morale due to problems or failures is not only normal, but healthy.  It pushes teams to work harder to create a successful outcome.   Morale is affected by our sense of purpose and remains high when we feel we are on the right path and making progress.  
 

3.      Team members are deeply concerned about the prospect of letting down their peers.