What if the most dangerous voice in our lives is the one we hear most often? Psalm 103 opens with something striking: David is not talking to God, and he is not talking to anyone else. He is talking to himself. 'Bless the Lord, O my soul.' It is a command directed inward, a deliberate act of preaching truth to the one listener who needs it most. This sermon explores that radical idea: that we are constantly in conversation with ourselves, and that conversation is almost never honest. We tend to rehearse our grievances, magnify our fears, and forget the faithfulness of God. The spiritual discipline at the heart of Psalm 103 is not passive reflection but active, gospel-centered self-preaching. We are called to stop merely listening to ourselves and start declaring what is true. God's love is everlasting. His forgiveness removes our sin as far as the east is from the west. He knows we are dust, and he does not hold that against us. He does not repay us according to what we deserve. These are not motivational phrases. They are the architecture of a life reoriented around the cross. When we internalize them, the anxious, accusing, despairing voice loses its grip.