Happiness is a temporary, transient state dependent upon the circumstances in which one finds herself. Joy is a growing consistency of positive emotional well-being, that transforms into an eternity-minded state of being, that incorporates the peace, gratitude, and contentment that comes from feeling secure in and loved by the Lord. That’s how I’ve experienced the difference. One can have temporary happiness without true joy, but when one has true joy, happiness will tag along as it’s sidekick and positively impact one’s outlook on life and countenance and attracts others to itself.