“Mr. L. did not get better all at once. He had first to experience cycles of separations, dreams, depressions, and insights—the repetition, or 'working through,' required for long-term neuroplastic change. New ways of relating had to be learned, wiring new neurons together, and old ways of responding had to be unlearned, weakening neuronal links. Because Mr. L. had linked the ideas of separation and death, they were wired together in his neuronal networks. Now that he was conscious of his association, he could unlearn it.”