This may sound stupid but...

I would say you need to have Confidence as a Tank. You need to believe in your ability to do your fun job and know you can do it well outside of the things you cannot control.

You cant control if the healer is asleep at the wheel or if the DPS don't know which button to hit or makes stupid mistakes. But as the Paladin Tank you can tank with confidence in knowing your stuff, laugh at the boss both knowing and telling him/mob out loud how much he sucks and break both his knee caps to tell the boss how much he sucks while laughing at him. When boss hits you you have to have the mentality that despite all else i'm GONA HIT YOU HARDER even when the numbers may not show it. You just got to feel that confident as a Paladin Tank.

You have to believe your that good and the only reason your guildies are that good is because you make them look good. Try not tanking the mob and sit and watch to see just how good they are infront the boss.

When it all comes down to it, its all Confidence and Attitude you have. Just like everyone said. Your guidies are probably not as good as you think they are.
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http://ardentdefender.blogspot.com/ - My WoW Blog.

"One day my time will come. Until then I continue to prepare myself".