Parantumassa is a fascinating non-fiction book by Finnish psychologist Kalle Haapakoski, in which the author explores the mental mechanisms behind human decisions and behavior. Haapakoski reveals how our decisions can be fueled by imbalances in our thinking system and how this affects our lives, interactions with others, and opportunities for self-improvement. In the book "Parantumassa", the author combines modern scientific research with psychological and philosophical reflections, creating an interesting and useful book for everyone who is interested in psychology, self-knowledge and understanding of human nature. "Parantumassa" is not just a book for those interested in psychology, but also a guide to a new level of understanding of ourselves and others, allowing us to deepen our knowledge of how we make decisions and interact with the world around us.