I'm thinking it probably isn't such a bad thing to occasionally take a good hard look at ourselves and see what a crummy person we can be.
I have been doing that today. Being made aware of how lousy I behave sometimes. Not because I behaved so far out of my usual behavior but I was given an opportunity to not suck and I totally dropped the ball. Even knowing better. I weakly justified it but really, deep down, I knew I was doing wrong. So I apologize to the people who were affected, though they will likely never know.
Mostly I apologize to God because He brought me up short and reminded me not to be a jerk and I did it anyway.