Tim Challies had a helpful post on preaching the gospel to yourself from Jerry Bridges book “Respectable Sins”.
Here is an excerpt:
In his book Respectable Sins, Jerry Bridges writes about the important discipline of preaching the gospel to yourself every day. Realizing that many people have heard of this discipline but do not know how to practice it, he provides an overview of how he does so. I found it helpful and trust you will too.
***** (From Bridges)
Since the gospel is only for sinners, I begin each day with the realization that despite my being a saint, I still sin every day in thought, word, deed, and motive. If I am aware of any subtle, or not so subtle, sins in my life, I acknowledge those to God. Even if my conscience is not indicting me for conscious sins, I still acknowledge to God that I have not even come close to loving Him with all my being or loving my neighbor as myself. I repent of those sins, and then I apply specific Scriptures that assure me of God’s forgiveness to those sins I have just confessed.
Bridges goes on, providing several Bible passages to help you preach the gospel to yourself. He then concludes:
Whatever Scriptures we use to assure us of God’s forgiveness, we must realize that whether the passage explicitly states it or not, the only basis for God’s forgiveness is the blood of Christ shed on the cross for us. As the writer of Hebrews said, “without the shedding of blood there is no forgiveness of sins (9:22), and the context makes it clear that it is Christ’s blood that provides the objective basis on which God forgives our sins.