" A “snap” is certainly not a medical term. Experts use fancier language to describe the instant when a troubled person steps over the edge. Nonetheless, a snap is a real moment. It can happen in a split second, the result of a terribly traumatic event. Or it can be the final straw, the sad culmination of pressure that builds and builds until the mind and body must find a release. "

― John Grisham , The Litigators