May the God of hope fill you with all joy and peace as you trust in him, so that you may overflow with hope by the power of the Holy Spirit. (Romans 15:13 NIV)

Guard your heart above all else, for it determines the course of your life. (Proverbs 4:23 NLT)

Indeed, we all make many mistakes. (James 3:2 NLT)

A joyful heart is good medicine. (Proverbs 17:22 ESV)