We know theologically/Scripturally that our thoughts, attitudes and perhaps actions, are in violation of God's revealed will. We perhaps are justifying ourselves in convincing ourselves that we are justified in it. Or we can at least be excusing ourselves.
Sometimes too, I think the question can come to us, "Do you want this, or do you want me, God?" Too often we think we can have both. Yes, God is a god of forgiveness, mercy and love, of incomparable, amazing grace who continues to reach out and even still bestow blessing in spite of our sin, oftentimes. But God won't leave us to wallow in our sins, though in a sense he indeed does, such wallowing being its own punishment.
Instead of holding on to our sin, we need to simply let go of it in confession and renunciation of it before God.
Those who conceal their sins do not prosper,What wisdom might you add to this for us?
but those who confess and renounce them find mercy.