Darkness is my only companion. The words of the psalmist rang hauntingly true for Kathryn Greene-McCreight when she was in the depths of her mental illness. In this brave and compassionate book, she confronts the difficult questions raised by her struggle with bipolar disorder. This thoroughly revised edition includes a new foreword by Justin Welby, Archbishop of Canterbury, an afterword by the author, refreshed resources, and questions for group discussion.