Your request for prayer for anxiety and for sleep is heard, and I am praying with you for the peace of God to guard your heart and mind today and through the night.
Scripture makes a distinction that is important for what you are feeling. First there is peace with God, and then there is the peace of God. Peace with God comes only through Jesus Christ, who made peace by His blood on the cross. When you put your trust in Him, the war is over. You are no longer fighting against God or running from Him, you belong to Him, and that brings a deep inner quiet. Without that foundation, the heart stays like a troubled sea with no rest. With it, you can know that you are forgiven and reconciled.
From that place, God wants you to experience His peace day by day. He has ordained peace for His people and desires that you live in it, even in a world full of turmoil. Jesus told His disciples, Peace I leave with you, my peace I give to you, not as the world gives. The world offers distractions that do not last, but His peace is steady and passes all human understanding.
The promise of Isaiah is that He will keep in perfect peace the one whose mind is stayed on Him, because that person trusts in Him. Anxiety grows when the mind is fixed on the waves of fear and on what might happen. Peace comes as you turn your thoughts toward the Lord Himself and trust that He will take care of what concerns you. Keeping your eyes on Him is the path to that settled heart.
You can rest because of who He is for you. Jesus described Himself as the door for the sheep. The shepherd would lie across the opening of the fold, so that nothing could get in to the sheep and no sheep could wander out without passing over him. In the same way, nothing reaches you without passing through Him. He watches over you, and as Jacob saw in his dream of a ladder between earth and heaven with the Lord at the top, heaven is not distant from you. The Lord is present and attentive to your life.
So I pray that the Lord will quiet your anxious thoughts today, that He will help you fix your mind on Him and trust Him moment by moment, and that He will grant you a good day walking in His peace. I pray also for sleep, that He who gives rest to His beloved will calm your heart tonight, keep you through the night, and let you lie down in safety under His care. May His peace, which guards hearts and minds in Christ, fill you and sustain you.