How could depression lead to a richer spiritual life?
All of these faculties have failed me in depression, and if they were all I had, I do not believe I would still be here to talk about the experience. Deeper down there is a soul, or true self, or "that of God in every person" that helps explain (for me, at least) where the real power of life resides. Three, the experience of emerging from a living hell makes the rest of one's life more precious, no matter how "ordinary" it may be. To know that life is a gift, and to be grateful for that gift, are keys to a spiritual life, keys that one is handed as depression yields to new life.
—Parker Palmer, Ph.D.