Ever since my first days as a doctor, forty years ago, people have asked for answers. A medical treatment was what they wanted, but the reassurance and comfort that human contact could bring was just as valuable, perhaps even more so. Unless he’s completely burned out, a physician sees himself as a rough- and- ready savior, yanking victims out of danger into a state of safety and well- being. I’m grateful for my years seeing patients, because I learned the difference between advice and solutions. People who are in trouble are rarely helped by advice. Crises don’t wait; something very bad will happen if the right solution isn’t found. I kept the same standard in mind when writing this book. It began with people writing me with troubles on their minds. Their letters were sent from around the world— at one point I was answering questions daily or weekly from India, the United States, and many other locales, mostly through the Internet. Yet in a sense everyon...