God is good and he is generous. It is harder to be surprised by the goodness and generosity of God when you feel so miserable. The goal of the gospel is simply to remind you of the truth. Your job is simply to believe.

Ed Welch, Depression: A Stubborn Darkness, Light for the Path. See John 6:28-29: Then they said to him, “What must we do, to be doing the works of God?” Jesus answered them, “This is the work of God, that you believe in him whom he has sent.”