Philippians 4:6-7; NKJV
6 Be anxious for nothing, but in everything by prayer and supplication, with thanksgiving, let your requests be made known to God;
7 and the peace of God, which surpasses all understanding, will guard your hearts and minds through Christ Jesus.
Perhaps Philippians 4:6 is the hardest command of the New Covenant. "Don't worry." How am I to go about submitting to Philippians 4:6?
Pray. Instead of worrying about it, being anxious over it, being troubled by it, by prayer and supplication with thanksgiving talk to God about it.
Instead of being full of anxiety, He will fill you full of His peace...