There is no perfect guide for one’s life, so books are rather an incentive or encouragement to work on oneself. The real work, after all, is in “working on oneself.” Unfortunately, however, we are often experts at lying to ourselves, which makes it more difficult. However, these guides are interesting, give insight into personal development, and contain some exercises and ideas on how to take control of one’s life. Additional books in German and Italian are listed under the German or Italian page.