"Hell is other people," Sartre said. Indeed, there are individuals who pose a threat to the mental and physical health of others. They can be called harmful people - these are those who always have a fly in the ointment and a ready stone in their bosom. They are next to us, a constant source of our resentment and grief. This book is a kind of survival guide that will not only teach you how to interact with unpleasant people, but also will not allow you to "get infected" yourself and become harmful individuals. Psychologist, communication specialist Lillian Glass identified 30 main types of "poisonous" people and 10 "antidotes" that allow you to communicate with harmful people without harming yourself. The author tried all the methods of protection proposed in the book herself: "I assure you, there are much more happy days in my life!"