Proverbs 4:23 KJV

Keep thy heart with all diligence; for out of it are the issues of life.

Philippians 4:8 KJV

Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good report; if there be any virtue, and if there be any praise, think on these things.