Rick Warren writes: Happiness depends on happenings. It comes from the root word hap, which means “luck” or “circumstances.” Joy is different: it goes deeper. Joy is an attitude, a choice. Joy is an inside job and is not dependant on circumstances. It is our choice to rejoice. Joy is what makes life – well – enjoyable. To live joyfully:

• develop the attitude of gratitude
• develop inner joy by giving
• develop inner joy by serving
• develop inner joy by sharing Christ with others

Rick Warren, God’s Power To Change Your Life, 2006, Grand Rapids, Michigan: Zondervan, p.66-67ff