Sometimes it bursts from your imagination fully formed, sometimes you absorb from nonfiction, sometimes you're able to imprint your own autobiographical experiences on a world you never yourself were a part of. A decent number of the one-liners in the title story originally came up in conversations with my girlfriend or my neighbor.
Anthony MarraFrom personal experience, I completely agree that it is often easier to go for monotone sadness. When I was starting out, I wrote a gazillion short stories that ran the gamut of human suffering - drug addiction, child abuse, terminal illness, loved ones dying by all manner of misfortune, etc. In hindsight, it's clear that I mistook the power of the situation for the power of the story.
Anthony Marra