"Exchange of services" is a book that reveals to the reader a unique concept of mutual assistance and cooperation between people. The author shares the most interesting examples of successful interactions in which the exchange of services turned out to be a key moment. The book teaches how to help others and how to get help in your own affairs, based on the principle "I help you with something - you help me." Reading this book, the reader will learn the depths of social interaction and the impact of a positive approach to life on results in all spheres of activity. "Exchange of services" is not only a practical guide, but also a source of inspiration for those who are looking for their way to success in a team.