This is what I think now; that the natural state of the sentient adult is a qualified unhappiness. I think also that in an adult the desire to be finer in grain than you are, "a constant striving" (as those people say who gain their bread by saying it) only adds to this unhappiness in the end--that end that comes to our youth and hope.
F. Scott Fitzgerald, The Crack-Up
depression, self-improvement, unhappiness