Jake raised his hand. By then, he was in his third month at Mountain Valley, and he looked considerably less anxious than several of the newcomers, including one who sat slumped on a couch with his head in his hands. “I’m free to play the part of terrible, evil thoughts for anyone who needs them,” Jake said with a smile. He had already spent weeks challenging his own thinking, which often persuaded him that if he failed a single quiz at school, “then I’ll get a bad grade in the class, I won’t get into the college I want, I won’t get a good job and I’ll be a total failure.” At Mountain Valley, Jake learned mindfulness techniques, took part in art therapy and equine therapy and, most important, engaged in exposure therapy, a treatment that incrementally exposes people to what they fear. The therapists had quickly figured out that Jake was afraid of failure above all else, so they devised a number of exercises to help him learn to tolerate distress and imperfection. On a group outing to nearby Dartmouth College, for example, Jake’s therapist suggested he strike up conversations with strangers and tell them he didn’t have the grades to get into the school. The college application process was a source of particular anxiety for Jake