If we want to judge situations fairly, we must first accept this truth: none of us is perfect. Most of our anger comes from forgetting this fact. We say, "I haven't sinned. I've done nothing wrong." But it's more honest to say, "I refuse to admit I've done anything wrong." We get furious when someone corrects us, whether through words or punishment. But we're actually making things worse by adding arrogance and stubbornness to our original mistakes.
If we desire to be impartial judges of all that takes place, we must first convince ourselves of this, that no one of us is faultless: for it is from this that most of our indignation proceeds. "I have not sinned, I have done no wrong." Say, rather, you do not admit that you have done any wrong. We are infuriated at being reproved, either by reprimand or actual chastisement, although we are sinning at that very time, by adding insolence and obstinacy to our wrong-doings.