Joy.

"I think the option of joy comes as a result of learning the promises of God during the good times, so that the Spirit can bring them to our mind in the hard times. It comes from building a web of deep friendships to support us in times of heartache. It comes from the ongoing practice of private fellowship with God. From hearts strengthened by grace. But always, there is the leap of faith. There is the deliberate step toward God instead of away from him. And the happy byproduct can be a joy unspeakable and full of glory."

-"Is Joy an Option?"