Ecclesiastes 5:20
"For he shall not much remember the days of his life; because God answereth him in the joy of his heart."
Cross References (ranked by relevance)
Psalm 37:16
A little that a righteous man hath is better than the riches of many wicked.
Romans 5:1
Therefore being justified by faith, we have peace with God through our Lord Jesus Christ:
Deuteronomy 28:47
Because thou servedst not the LORD thy God with joyfulness, and with gladness of heart, for the abundance of all things;
Isaiah 64:5
Thou meetest him that rejoiceth and worketh righteousness, those that remember thee in thy ways: behold, thou art wroth; for we have sinned: in those is continuance, and we shall be saved.