Imagine that, when you were 12 years old, your family moved to the other side of the country. In your new school, you were bullied for the first time. When you reflect upon this period of your life today, do you see this as just one of many episodes in which things were going great, and then turned sour? Or do you see it as another example of a tough experience that had a happy ending? It may not seem as if the way you tell this story, even just to yourself, would shape who you are. But it turns out that how you interpret your life, and tell its story, has profound effects on what kind of person you become. If you're the kind of person who would remember the positives that came out of that (hypothetical) bullying episode at your new school, it's also more likely that you enjoy a greater sense of wellbeing and satisfaction in life. Moreover, this raises the tantalising possibility that changing your self-authoring style and focus could be beneficial - indeed, helping people to re-interpret their personal stories in a more constructive light is the basis of what's known as narrative therapy". Modify your story as you tell it, and perhaps you can change the kind of person you are. As philosophers have long argued, there is a sense in which we construct our own realities. Usually this liberating perspective is applied by psychotherapists to help people deal with specific fears and anxieties. Life story research suggests a similar principle may be applicable at a grander level, in the very way that we author our own lives, therefore shaping who we are.