What does the Bible say about not being able to sleep at night?

Hear me when I call, O God of my righteousness: thou hast enlarged me when I was in distress; have mercy upon me, and hear my prayer. O ye sons of men, how long will ye turn my glory into shame? how long will ye love vanity, and seek after leasing? Selah. But know that the LORD hath set apart him that is godly for himself: the LORD will hear when I call unto him. Stand in awe, and sin not: commune with your own heart upon your bed, and be still. Selah. Offer the sacrifices of righteousness, and put your trust in the LORD. There be many that say, Who will shew us any good? LORD, lift thou up the light of thy countenance upon us. Thou hast put gladness in my heart, more than in the time that their corn and their wine increased. I will both lay me down in peace, and sleep: for thou, LORD, only makest me dwell in safety.

How long wilt thou forget me, O LORD? for ever? how long wilt thou hide thy face from me? How long shall I take counsel in my soul, having sorrow in my heart daily? how long shall mine enemy be exalted over me? Consider and hear me, O LORD my God: lighten mine eyes, lest I sleep the sleep of death; Lest mine enemy say, I have prevailed against him; and those that trouble me rejoice when I am moved. But I have trusted in thy mercy; my heart shall rejoice in thy salvation. I will sing unto the LORD, because he hath dealt bountifully with me.

As the hart panteth after the water brooks, so panteth my soul after thee, O God. My soul thirsteth for God, for the living God: when shall I come and appear before God? My tears have been my meat day and night, while they continually say unto me, Where is thy God? When I remember these things, I pour out my soul in me: for I had gone with the multitude, I went with them to the house of God, with the voice of joy and praise, with a multitude that kept holyday. Why art thou cast down, O my soul? and why art thou disquieted in me? hope thou in God: for I shall yet praise him for the help of his countenance. O my God, my soul is cast down within me: therefore will I remember thee from the land of Jordan, and of the Hermonites, from the hill Mizar. Deep calleth unto deep at the noise of thy waterspouts: all thy waves and thy billows are gone over me. Yet the LORD will command his lovingkindness in the daytime, and in the night his song shall be with me, and my prayer unto the God of my life.

Thou carriest them away as with a flood; they are as a sleep: in the morning they are like grass which groweth up. In the morning it flourisheth, and groweth up; in the evening it is cut down, and withereth.

Trust in the LORD with all thine heart; and lean not unto thine own understanding. In all thy ways acknowledge him, and he shall direct thy paths.

Thou wilt keep him in perfect peace, whose mind is stayed on thee: because he trusteth in thee.

Come unto me, all ye that labour and are heavy laden, and I will give you rest. Take my yoke upon you, and learn of me; for I am meek and lowly in heart: and ye shall find rest unto your souls. For my yoke is easy, and my burden is light.

Casting all your care upon him; for he careth for you.