The strategy for foolish people is simple: Quit talking about the problem and clearly communicate that because talking is not helping, you are going to take steps to protect what is important to you, the mission or other people. Give limits that stop the collateral damage of their refusal to change, and where appropriate, give consequences that will cause them to feel the pain of their choice to not listen.
The necessary ending that you have to initiate with people caught in their own foolishness is to end the pattern. You cannot control them or get them to change. What you can do is create an ending to the effects their refusal to take responsibility is having on you or others. By so doing, you have accomplished two things that nagging did not do. You have limited the effects of their behavior on you and others, thus quarantining their ownership disease from further infecting your life, the team or the mission, and you may have done the one thing that can influence them to change. Talking will not help, but doing something that causes them to feel the consequences of their behavior may be what finally turns them around.”
Necessary Endings, Dr. Henry Cloud, p 139-140