How do authors make a living? (or, approaching the middle class of writerdom)

It surprises many people to learn (people not in the industry, anyway), that the majority of authors do not make a living off of their writing. Not exclusively, at least. I’m not saying it’s impossible, or that it doesn’t happen, or that it won’t happen for you. I honestly hope it does! Between advances, royalties, and options I’m sure Stephen King doesn’t have to consider whether to take that editing job or not. I think it’s good to be aware, though, that most authors are in what Cory Doctorow refers to as “the middle class of writerdom.” i.e. they have day jobs. Same goes for every kind of artist: dancer, actor, musician, painter, etc. Below, in an interview with Bill Kenower, Doctorow speaks of having been...