Bryan at Creedal Christian has posted this meditation from the late Metropolitan Anthony of Sourozh (Bloom) that I hope to remember whenever I feel ensnared in persistent sins:

So often we ask ourselves and one another a very tormenting question: How can I deal with my sinful condition? What can I do? I cannot avoid committing sins, Christ alone is sinless. I cannot, for lack of determination, or courage, or ability truly repent when I do commit a sin, or in general, of my sinful condition. What is left to me? I am tormented, I fight like one drowning, and I see no solution.

And there is a word which was spoken once by a Russian staretz, one of the last elders of Optina. He said to a visitor of his: No one can live without sin, few know how to repent in such a way that their sins are washed as white as fleece. But there is one thing which we all can do: when we can neither avoid sin, nor repent truly, we can then bear the burden of sin, bear it patiently, bear it with pain, bear it without doing anything to avoid the pain and the agony of it, bear it as one would bear a cross, — not Christ’s cross, not the cross of true discipleship, but the cross of the thief who was crucified next to Him. Didn’t the thief say to his companion who was blaspheming the Lord: We are enduring because we have committed crimes; He endures sinlessly… And it is to him, because he had accepted the punishment, the pain, the agony, the consequences indeed of evil he had committed, of being the man he was, that Christ said, ‘Thou shalt be with Me today in Paradise…’