An amazing philosophical yet practical book. By questioning everything that causes us pain, we not only gain new insights but also free ourselves from the negative emotions associated with it. Subsequently, we are free to change what we can change and to accept what cannot be changed. Behind the questioning technique lies Byron Katie's "The Work," which is presented here free from ideology, esotericism, and personality cult. Almost imperceptibly, so to speak. Therefore, the book is particularly suitable for introducing people to the questioning technique without any particular moralizing.