Dave your article is absolutely correct. I've seen many a clan suffer because of them, and have myself on occasion made a couple of those mistakes.
Another one you might want to add is:
"I'm never wrong"
Being human means we have the capacity to be wrong, and it's guaranteed that we will be so on several occasions. Trying to prove you are right all the time can lead to more mistakes being made and a loss in confidence from your members.
Or something along those lines.
02-Aug-2013 00:02:21