Philippians 4:6-8

Be anxious for nothing, but in everything by prayer and supplication with thanksgiving let your requests be made known to God.  And the peace of God, which surpasses all comprehension, will guard your hearts and your minds in Christ Jesus.

Finally, brethren, whatever is true, whatever is honorable, whatever is right, whatever is pure, whatever is lovely, whatever is of good repute, if there is any excellence and if anything worthy of praise, dwell on these things.