It is one of the great mysteries of the hold of sin that we cling so tenaciously to those vices that most grieve and torture us — resentment, unhappiness, jealousy, vengeance, anxiety, bitterness, covetousness, pessimism, and unbelief.
Our fist-clenched grasp on these self-destructive sins is almost a form of masochism. We cherish them despite the deep torment they bring to us because we find in them a perverse security, though they will eventually destroy us.
To surrender these agonizing, grievous, self-harming sins is a form of death.
That death-to-life is precisely what a robust, victorious Christianity offers.