I have a post up today on I Want To Teach Forever, as part of Mr. D's 52 Teachers, 52 Lessons series. My lesson? Apologize when you mess up.
I hope you'll go check it out. Even if you read it and think, "Man, this chick is pretty full of herself, recommending I read something so obvious, I was apologizing to kids when she was still in short pants," the series is full of all kinds of other interesting posts from teachers (and others). I've learned a lot from it.
And if YOU'RE a teacher and have advice for others (which, let's face it, most of us do - even if it's because we've learned from the error of our ways...), write about it and get it to Mr. D! He's always looking for more submissions. Share your knowledge of how to be a better teacher; people like me will appreciate it immensely.