For unknown reasons, the gust of energy that had swept me up and fizzed me around all summer had dropped me hard, mid-October, into a drizzle of sadness that stretched endlessly in every direction: with a very few exceptions . . . I hated being around people, couldn’t pay attention to what anyone was saying, couldn’t talk to clients, couldn’t tag my pieces, couldn’t ride the subway, all human activity seemed pointless, incomprehensible, some blackly swarming ant hill in the wilderness, there was not a squeak of light anywhere I looked, the antidepressants I’d been dutifully swallowing for eight weeks hadn’t helped a bit, nor had the ones before that (but then, I’d tried them all; apparently I was among the twenty percent of unfortunates who didn’t get the daisy fields and the butterflies but the Severe Headaches and the Suicidal Thoughts); and though the darkness sometimes lifted just enough so I could construe my surroundings, familiar shapes solidifying like bedroom furniture at dawn, my relief was never more than temporary because somehow the full morning never came, things always went black before I could orient myself and there I was again with ink poured in my eyes, guttering around in the dark. (Donna Tartt, The Goldfinch, p. 512)
A taste, perhaps, of why she won the fiction Pulitzer this year.