One of the most irritating things we learn in Ted Geltner’s new biography of Denis Johnson, Flagrant, Self-Destructive Gestures, is just how easy it all was for Denis. Not that Denis’ life was easy — anyone who’s picked up Jesus’ Son is at least dimly aware that DJ blasted away his 20s careening between dope and booze before he got his act together — but the writing, if we’re to believe Geltner’s reverent account, came to him with blissful, galling ease.