Writing every day? Forget it. That’s what best-selling male writers do while their wives do everything else. Or so I thought until the 100 Day Challenge. The Challenge started at the end of GrubStreet’s spring Muse and the Marketplace Conference. Keynote speaker, Walter Mosley, advocated writing every day, claiming that it allowed writers to access their unconscious and sink more deeply into their work. Following the speech, fellow Grubbie, non-fiction writer and memoirist, M