Autobiographical writing is often slotted into easily marketable categories—the solitary odyssey, the bereavement chronicle, the trauma plot. Meghan O’Gieblyn’s brilliantly unclassifiable “Will and Attention” resists the pull toward categorization. The memoir is in some ways a familiar story of addiction and recovery, but it has a jagged, nonlinear trajectory that makes reading it unpredictable and occasionally frightening.