" God and God alone is the final, ultimate goal of our quest. All that God is for us in Jesus is the Object of our quest for joy. When I speak of fighting for joy, I mean joy in God, not joy without reference to God. When I speak of longing for happiness, I mean happiness in all that God is for us in Jesus, not happiness as physical or psychological experience apart from God. "

― John Piper , When I Don't Desire God: How to Fight for Joy