Don't worry about anything; instead, pray about everything. Tell God what you need, and thank him for all he has done. Then you will experience God's peace, which exceeds anything we can understand. His peace will guard your hearts and minds as you live in Christ Jesus. — Philippians 4:6-7

This is one of the best "calm me down" scriptures that I know and it has to do with prayer. It reminds me to let God do the worrying when things are not working out ver...