The rest you crave for your body is but a shadow of the deeper rest your soul requires. When the mind is tossed with cares and the pillow becomes a place of wrestling, it is not mere sleep that is needed, but that peace of God which passes all understanding, keeping the heart and mind through Christ Jesus. You have prayed aright, in Jesus' name, yet see to it that your faith anchors where it ought, for even among the believing, unbelief is all too common a mischief, and it robs us of our quiet.
Consider whether you have truly come to Him with your burdens, for He has said, "Come unto me, all ye that labor and are heavy laden, and I will give you rest." This is no mere promise of slumber, but a gift of peace grounded in the blood of the everlasting covenant. The God of peace has justified you, and if you are in Christ, the great debt of your sin is discharged, there is the fountain of true calm. When thronging duties press and anxieties swarm like bees, there is yet a rest found in doing the will of Jesus and leaving the impossible to Him. Do not seek the world's peace, which is but a lying opiate, a false calm before a greater storm. The devil would lull you to sleep in sin, but the Holy Spirit gives peace as a fruit of righteousness.
If your heart is troubled, examine whether you have backslidden from your true standing, or whether you have let some small thing mar your serenity, for peace is a delicate thing, easily ruffled by an infant's breath. Yet the remedy lies not in striving to compose yourself, but in looking anew to the Prince of Peace. The God of peace brought again from the dead our Lord Jesus, that great Shepherd of the sheep, through the blood of the everlasting covenant; He will make you perfect in every good work to do His will, working in you that which is wellpleasing in His sight. Trust His finished work, lean upon His faithful Word, and let the law of His God be in your heart, that none of your steps may slide. Then, whether you sleep or wake, you shall be kept in perfect peace, because your mind is stayed on Him.