“Prayer for peace in my heart” is partially based on Ephesians 2:13-18 which speaks about how Jesus is our only true peace. He makes peace between you and God by ending all conflict and hostility. But beyond just an end to disagreement, true peace is a unified heart. Pray for peace in your heart and God will give it to you.
Let this prayer for sleep and rest inspire you to seek comfort in the Lord. True rest comes from learning to trust God. If we rely on our circumstances to give us peace, we can never sleep soundly. Instead, let the love and forgiveness of Christ bring calm to your heart.