Handle opposition with dignity and class. Far too many men and women, adults all of them - are incapable of dealing with the fact that an opinion contrary to their own isn't the end of the world. Especially when it comes to religion or politics. This isn't a "winner take all" game, and there is a lot of grey area so ya'll need ta jus' simmer dawn naow!
Be able to accept criticism graciously. Be able to give a genuine compliment. Know how to give a proper backhand to shut someone up.
Hardy harr harrr .... even the mechanic that I took my previous car to didn't install the replacement timing belt properly the first time. The stupid prick.