Here I was, in my mid-twenties, sitting in my physician’s office, discussing the results of a series of medical tests. As someone who has always struggled with hypochondria, I was convinced that I had a brain tumor or an underlying heart condition. What else could explain my lightheadedness and heart palpitations? I was shocked when the doctor revealed that the tests all came back negative. According to the evidence, I was healthy. He wanted to know if I had ever considered meditation or other relaxation techniques.