In studying the sermon text for Sunday (Luke 3:15-22), and the idea of repentance, came across this from C.S. Lewis:
Now repentance is no fun at all.
It is something much harder than merely eating humble pie. It means unlearning all the self-conceit and self-will that we have been training ourselves into for thousands of years. It means killing part of yourself, undergoing a kind of death...
And here comes the catch. Only a bad person needs to repent: only a good person can repent perfectly. The worse you are the more you need it and the less you can do it. The only person who could do it perfectly would be a perfect person - and he would not need it.
~ from Mere Christianity