I enter a mild depression in the middle of every book I write (or edit, for that matter). I’m in too deep to back out, yet I cannot see the end and I’m just not excited anymore. Because I know this about myself, I now take this depressive period as a good sign; it means I’m halfway finished! I don’t worry about it or try to ease it; I simply keep going, because I know that I’ll work through it in a while.
– from “The Soul Tells a Story: Engaging Creativity with Spirituality in the Writing Life” by Vinita Hampton Wright Loyola Press