That terrible mood of depression of whether it's any good or not is what is known as The Artist's Reward.
(Ernest Hemingway (1899-1961), U.S. author. letter, Sept. 13, 1929, to F. Scott Fitzgerald. Selected Letters, ed. Carlos Baker (1981).
Biographer and critic Leon Edel observed, in a 1988 interview, "The greatest enemy of writers is depression, which they can't avoid.")
There are times when the pain becomes a torture for a man. But the phoenix is always supposed to rise from the ashes. So let us not be bogged down by depression but we must confront the adversities slowly but firmly.
During depression the world disappears. Language itself. One has nothing to say. Nothing. No small talk, no anecdotes. Nothing can be risked on the board of talk. Because the inner voice is so urgent in its own discourse: How shall I live? How shall I manage the future? Why should I go on?
(Kate Millett (b. 1934), U.S. feminist theorist, literary critic, essayist, autobiographer, sculptor. The Loony-Bin Trip, pt. 3, Simon and Schuster (1990).)