Philippians 4:8

Think of good things and your thoughts will produce good fruit in your life. Your thoughts affect your day, how you feel and even your health. 
Philippians 4:8
"...whatsoever things are true, whatsoever things are honest, whatsoever things are honorable, 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.'