A helpful reminder from A.W. Pink in The Attributes of God, p. 39:
Here then is a sure resting-place for the heart. Our lives are neither the product of blind fate nor the result of capricious chance, but every detail of them was ordained from all eternity, and is now ordered by the living and reigning God. Not a hair of our heads can be touched without his permission. “A man’s heart deviseth his way: but the Lord directeth his steps” (Prov. 16:9).
What assurance, what strength, what comfort this should give the real Christian! “My times are in Thy hand” (Ps. 31:15). Then let me “Rest in the Lord, and wait patiently for him” (Ps. 37:7).