The law of sin (concupiscence) is not greater than the law of God. Yet it is always a battle, we should never let our guard down. Which law will you choose to live by? One law gives us life, the other death.
"I find then a law, that when I have a will to do good, evil is present with me. For I am delighted with the law of God, according to the inward man: But I see another law in my members, fighting against the law of my mind, and captivating me in the law of sin, that is in my members. Unhappy man that I am, who shall deliver me from the body of this death? The grace of God, by Jesus Christ our Lord. Therefore, I myself, with the mind serve the law of God; but with the flesh, the law of sin." - Romans 7:21-25