Let’s start with Jesus:
Do not let your hearts be troubled. Trust in God; trust also in me.
Peace I leave with you; my peace I give you. I do not give to you as the world gives. Do not let your hearts be troubled and do not be afraid. (John 14:27)
Cast all your anxiety on him because he cares for you. (1 Peter 5:7)
And my God will meet all your needs according to his glorious riches in Christ Jesus. (Philippians 4:19)
Let the peace of Christ rule in your hearts, since as members of one body you were called to peace. And be thankful. (Colossians 3:15)
The bottom line: Stop worrying. Trust God. There’s no other way to live.