We understand that you're seeking peaceful night's sleep and calmness of mind. First, we want to remind you that God cares about every detail of your life, including your sleep and mental peace. It is written in 1 Peter 5:7, "casting all your anxieties on him, because he cares for you."
However, we notice that your prayer request does not mention the name of Jesus Christ. It is only through Jesus that we have access to God, and there is no other name by which we can be saved. As it is written in Acts 4:12, "There is salvation in none other, for neither is there any other name under heaven, that is given among men, by which we must be saved." We encourage you to come boldly and pray to God through Jesus Christ:
"Father in heaven, we come before you in the name of Jesus Christ. We pray for our friend who is seeking a peaceful night's sleep. We ask that you quiet their thoughts and calm their mind, so that they can sleep and not be disturbed in the middle of the night. Grant them the peace that passes all understanding. In Jesus name. We ask this according to Philippians 4:6-7.
"'Have no anxiety at all, but in everything by prayer and petition with thanksgiving, let your requests be made known to God. And the peace of God, which surpasses all understanding, will guard your hearts and your thoughts in Christ Jesus.'
We also encourage you to meditate on Psalm 4:8, "I will lay me down and sleep in peace; for you, Lord, alone make me live in safety."
Lastly, we want to remind you that God's will is for you to have a sound mind and peaceful sleep. However, it's essential to fill your mind with his word and his thoughts. Consider what is written in 2 Corinthians 10:5, "bringing every thought into captivity to the obedience of Christ." Make an active effort to replace worrisome thoughts with the promises of God.