The book "転職の思考法" discusses the thought process behind changing jobs. It emphasizes that the most important factor in a job change is not knowledge or information, but rather the decision-making criteria, or "思考法." The book explores the fear and challenges associated with making a career change, and highlights the importance of understanding one's market value and assets. It also provides guidance on how to assess one's skills and experiences, and offers strategies for finding a fulfilling job that aligns with one's values and goals. The book concludes by emphasizing the importance of personal growth and self-empowerment in career decisions.