Here is an excerpt to ponder based on Romans 7:24-25:
"Have you despaired of yourself, or do you hope that if you read and pray more you will be a better Christian? Bible reading and prayer are not wrong, and God forbid that we should suggest that they are, but it is wrong to trust even in them for victory. Our help is in him who is the object of that reading and prayer. Our trust must be in Christ alone. Happily, the "wretched man" does not merely deplore his wretchedness; he asks a fine question, namely: "Who shall deliver me?" "Who?" Hitherto he has looked within for a solution to his problem; now he looks beyond himself for a Savior. He no longer puts forth self-effort; all his expectation is now in another.
How did we obtain forgiveness of sins? Was it by reading, praying, almsgiving, and so on? No, we looked to the Cross, believing in what the Lord Jesus had done; and deliverance from sin becomes ours on exactly the same principle, nor is it otherwise with the question of pleasing God. In the matter of forgiveness we look to Christ on the Cross; in the matter of deliverance from sin and of doing the will of God we look to Christ in our hearts. For the one depend on what he has done; for the other we depend on what he will do in us; but regard to both our dependence is on him alone. From start to finish, he is the One who does it all."