That said, let's go on to a pet peeve.
I utterly frigging hate watching when people bang their heads into stone walls.
I mean; if you have tried doing or accomplishing something in a particular way for five times, and it has never worked, how realistic is the assumption that this time, if you just concentrate hard enough and invest enough willpower, or whatever, it will magically start working? If you have tried getting people to do something in a particular way five times, and it has not worked, how likely it is that if you just motivate them well enough or assume that this time, everyone will play nice with each other and do their part, they'll suddenly pull through?
Personally, I think the probability of the stone wall suddenly magically collapsing if you bang your head to it the sixth time is pretty close to zero.
So why oh why is it so hard for people to sit down and think what they could do differently next time to make it at least a bit likelier?