I'm always sure I know better.
By which I primarily mean, better than everyone else. Evey and I have concluded that this is at least partly a big-sisterly trait: the conviction that you know how to do a thing properly--and are, moreover, obligated to explain that method to everyone else.
I can understand that some people might find this irritating, but I have a hard time seeing it as a character flaw. I mean, I give a lot of thought to the best, clearest, most efficient, and (where relevant) kindest ways of getting things done--so why wouldn't I want to share that information with others? And why wouldn't they want to learn those best practices from me?
The sentence, though, also applies to myself: whenever I do something dumb, I'm always sure that I do or did know better. I tend to believe that I understand my own motives and feelings nearly perfectly--or that I can, with just a bit of reflection. When I err or misread a situation, then, I'm angry with myself for not being smarter or paying closer attention.
Maybe what I'm really saying is that I believe there are right ways to do things--and that though one may err, one also can learn from advice and experience.
Or at least, as long as I'm around to help out.