One of the effects of the fall is it takes very little for us to feel righteous and it takes alot for us to feel sinful.

Generally it will take us hitting rock bottom before we realize that we are sinful, but only a couple compliments to think too highly of ourselves.

That is why continual repentance and remembering your justification are so critical to the Christian life.  It’s the bumpers that keep you from the effects of self-righteousness and lets grace shine in.