When my wife suffered a traumatic brain injury, she wanted to read only romance novels. After getting past my distaste for the genre, I understood why. Illustration: Belicta Castelbarco for WSJ, Vecteezy Ten years ago, I found myself running beside my wife Sharon as she was gurneyed into an operating room in Montefiore Medical Center in the Bronx. As the OR doors closed, a nurse handed me a plastic baggie containing my wife’s wedding ring.