Don't work for fools. It's not worth it. Getting paid less to work for people you like and believe in is much better for you (and your career) in the long run.
When we rely upon organization, we get what organization can do; when we rely upon education, we get what education can do; when we rely upon eloquence, we get what eloquence can do. And so on. But when we rely upon prayer, we get what God can do.
Be compassionate to everyone. Don't just search for whatever it is that annoys and frightens you-see beyond those things to the basic human being. Especially see the child in the man or woman. Even if they are destroying you, allow a moment to see how lost in their own delusion and suffering they are.
You're going to fall down, but the world doesn't care how many times you fall down, as long as it's one fewer than the numbers of times you get back up.
The purpose of a Christian education would not be merely to make men and women pious Christians: a system which aimed too rigidly at this end alone would become only obscurantist. A Christian education must primarily teach people to be able to think in Christian categories.