And in his late 30s, at the height of his fame, he ran a double life, conducting a largely secret affair with the woman who eventually became his second wife, while his first was gradually succumbing to tuberculosis.
这是一个复合句，前面的in his late 30s是句子的状语；at the height of his fame是修饰late 30s的。主干是he ran a double life。句子后面的现在分词结构是句子的伴随状语；while引导的状语从句做该句伴随状语的时间状语。
at the height of one’s fame 富有盛名
succumb to 屈服于
Though that approach has gained a reputation for confrontation and tough-mindedness, Kristene Doyle, associate executive director of the Albert Ellis Institute in New York City and a clinical psychologist specializing in REBT, says that collaboration between the therapist and patient, a patient's complete self-acceptance, and the therapist's unconditional acceptance of the patient are also essential to REBT.