Michael Lang’s book, "THE GUIDE TO REFLECTIVE PRACTICE IN CONFLICT RESOLUTION", is a practical manual that illuminates the thought processes driving our actions — the underlying rationale for practical decisions — rather than simply describing "what to do".

The author explores the application of theory and research to practical decision-making based on the principles of Reflective Practice. This approach helps the reader better understand why we make specific decisions in our work.

In this book, Michael Lang offers a broad perspective on theories, defining them as a vast collection of beliefs, principles, biases, models, doctrines, philosophies, and standards that shape our perception of the world and influence our decision-making. These accumulated core beliefs and the "system of theories" — comprising core values, applied theories, practice models, personal styles, behavioral norms, professional experience, and contextual factors — shape how we assess specific situations and determine our subsequent actions. As such, these theories explain phenomena and provide meaning to events, structures, patterns, and behaviors.

The author examines his work within the context of mediation and conflict resolution. His central thesis is that "reflective practice is a vehicle for thoughtful and introspective analysis of professional actions, followed by learning through self-assessment to improve our abilities and skills," relying less on "instruction and advice" and more on "self-discovery".