Celebrities are people too. Of course, they are, but due to public image, we sometimes struggle to imagine the Kylie Jenners and Jennifer Anistons of the world having real people problems. But, amazingly, the most wealthy and well-known among us struggle with things like mental health just as much as anyone else, and some of them resort to books to heal their ails. Below is a quiz that will test your knowledge of which wellness, self-help, fitness, and healthy recipe books were written by which stars. How well do you know your favorite celebrity? Find out below.