John Piper in his book, “When I don’t Desire God…how to fight for joy, says that we are to fight to know and to take joy in the person of Jesus himself. This should not be a struggle per se. “The fight for joy is the struggle to trust God with the burdens of life.” Our life should be consumed with knowing Christ better and learning to love him more. Anything less is the essence of evil. We are to love him not just decide for him. And this is a lifelong fight as well as the joy of Our Lives.