Don't be anxious, make requests known to God, and He will give peace

Scripture reference

Philippians 4:6–7 (ASV)

6In nothing be anxious; but in everything by prayer and supplication with thanksgiving let your requests be made known unto God. 7And the peace of God, which passeth all understanding, shall guard your hearts and your thoughts in Christ Jesus.

Stories

Hudson Taylor's countenance, calm and peaceful attitude touched others so much that he was asked how he came to such a life. He responded "I could not possibly get through the work I have to do without the peace of God ' which passeth all understanding ' keeping my heart and mind."
Hudson Taylor was becoming sick with anxiety over the prospect of asking people to join him in the dangerous and difficult work in China. Only by fully trusting in God for his own welfare and direction did Hudson Taylor get peace to trust Him for the welfare and direction of future workers.
“Call upon Me in the day of trouble; I will deliver thee, and thou shalt glorify Me.” These were the words a distraught Hudson Taylor heard as he made for a doctor’s house in an effort to save his dying wife. In faith he obeyed and was instantly filled with unspeakable peace—a peace beyond all understanding. On getting home from the doctor’s, he found that the Great Physician Himself had visited his wife.
Mrs. E was overcome with fear as the time for her surgical operation drew near and before long she could not sleep again and began to agonize. But as she picked her Bible and read, God's peace calmed her troubled heart. It was after the successful surgery she learned that at that moment when she feared the worst, two of her friends were up praying for her.
That we do away with anxiety but instead through thanksgiving and prayer, make our request known to God was the truth that meant the most to Mr. Stockwell as he served his indeterminate jail time. By doing just this he was able to live a normal and peaceful life in prison, much to the surprise of his fellow prisoners.
Rather than allow anxiety get the best of him, a needy Pastor took his needs to the Lord and made specific demands of His Lord. And over the course of the following days, he watched with astonishment, as the Lord answered his prayer one day at a time.