Practice giving everything to God, especially at the end of the day, so you can sleep.

"The peace of God, that passes all understanding, will guard your hearts and minds through Christ Jesus." Philippians 4:7

"I can do all things through Christ who strengthens me." Philippians 4:13

"Do not be anxious about anything, but in every situation, by prayer and petition, with thanksgiving, present your requests to God." Philippians 4:6

"But even if you should suffer for what is right, you are blessed. Do not fear their threats; do not be frightened." 1 Peter 3:14

"When anxiety was great within me, your consolation brought me joy." Psalms 94:19

"Who of you by worrying can add a single hour to your life?" Luke 12:25

"For God has not given us a spirit of fear, but of power, love, and self-control." 2 Timothy 1:7