All readers come to fiction as willing accomplices to your lies. Such is the basic goodwill contract made the moment we pick up a work of fiction.
I want to view my own efforts to write a novel as a function of my own artistic aspirations rather than a good career move. And I need to learn how to commit to characters for a longer time, to confront the limits of my own capacities for attention and compassion. That's what a writing career does, in the best instance: it allows you to keep after what you can't do.
Art arises from loss. I wish this weren't the case. I wish that every time I met a new woman and she rocked my world, I was inspired to write my ass off. But that is not what happens. What happens is we lie around in bed eating chocolate and screwing. Art is what happens when things don't work out, when you're licking your wounds. Art is, to a larger extent than people would like to think, a productive licking of the wounds.
I've felt pressure to produce long fiction for as long as I've been writing fiction. There's just an incredible bias in the publishing industry toward novels and away from short stories. They're seen as D.O.A. in the marketplace, which seems nuts to me, given that various collections done smashingly and deservedly well in economic terms.