A few years ago, Rohan and her colleagues designed a group CBT protocol to counter SAD. It was a modification of Aaron Beck, M.D.'s cognitive therapy for major depressive disorder. The primary treatment component of Beck's therapy, namely the cognitive restructuring of negative automatic thoughts and core beliefs, was framed in ways to help patients cope with winter-specific negative thoughts. For instance, patients would use diaries to identify and track negative thoughts about, say, the oppressive darkness of winter mornings or the sullen monotone landscape of winter. The therapist would then challenge these thoughts.