Ten years ago, I set out to examine luck. I wanted to know why some people are always in the right place at the right time, while others consistently experience ill fortune. I placed advertisements in national newspapers asking for people who felt consistently lucky or unlucky to contact me. Hundreds of extraordinary men and women volunteered for my research and over the years, I have interviewed them, monitored their lives and had them take part in experiments. The results reveal that although these people have almost no insight into the causes of their luck, their thoughts and behavior are responsible for much of their good and bad fortune. Take the case of seemingly chance opportunities. Lucky people consistently encounter such opportunities, whereas unlucky people do not. I carried out a simple experiment to discover whether this was due to differences in their ability to spot such opportunities. I gave both lucky and unlucky people a newspaper, and asked them to look through it an...