Proverbs 14:30 - A heart at peace gives life to the body, but envy rots the bones.

Proverbs 15:15 - All the days of the oppressed are wretched, but the cheerful heart has a continual feast.

Proverbs 17:22 -A cheerful heart is good medicine, but a crushed spirit dries up the bones.

Proverbs 23:17-18 - Do not let your heart envy sinners, but always be zealous for the fear of the Lord.  There is surely a future hope for you, and your hope will not be cut off.

Hebrews  13:5 - Keep your lives free from the love of money and be content with what you have, because God has said, "Never will I leave you; never will I forsake you."

I Timothy 6:6 - But godliness with contentment is great gain.