RECOMMENDED If the great American narrative is success, why are so many of the&nbsp;great American novelists obsessed with failure? J.D. Salinger, Philip&nbsp;Roth, Junot Diaz, Anne Tyler, Jonathan Franzen. Here are poets of&nbsp;unraveling. The short answer is Yanks need them. In a country drubbed&nbsp;constantly by the visuals of triumphal plenitude, they remind&nbsp;Americans you are not alone [...]