"Successful Management by Motivation" is a professional book that addresses the importance of motivation in companies. In a knowledge-based society, it is crucial for businesses to rely not only on extrinsic incentives to motivate their employees. The book argues that an exclusive focus on monetary incentives, such as performance-related pay, can often be counterproductive, as it may undermine intrinsic motivation, such as work ethic. Through comprehensive case studies, representative surveys, and analyses based on a variety of companies and employees, the work highlights different aspects of motivation and offers practical approaches to promote and maintain a balanced combination of intrinsic and extrinsic motivation. The insights from the research provide valuable impulses for leaders seeking sustainable competitiveness.