Rejoice in the Lord always. I will say it again: Rejoice!1
References for Philippians 4:4
Let your gentleness be evident to all. The Lord is near.2
References for Philippians 4:5
Do not be anxious about anything,3 but in everything, by prayer and petition, with thanksgiving, present your requests to God.4
References for Philippians 4:6
And the peace of God,5 which transcends all understanding,6 will guard your hearts and your minds in Christ Jesus.
References for Philippians 4:7
Finally, brothers, whatever is true, whatever is noble, whatever is right, whatever is pure, whatever is lovely, whatever is admirable--if anything is excellent or praiseworthy--think about such things.