So, what they do is what's called, "Systematic desensitization," which is they expose you to what causes you the fear but they relax you at the same time so you replace the aversive classical conditioned fear with something more positive.

治疗的方法叫做“系统脱敏疗法“,也就是将你暴露在引起恐惧的情境下,但同时让你放松,所以你用更加积极的感觉,替换了经典条件作用造成的厌恶性恐惧。

耶鲁公开课 - 心理学导论课程节选