Book excerpt: The Handbook of Coaching Psychology: A Guide for Practitioners provides a clear and extensive guide to the theory, research and practice of coaching psychology. In this new and expanded edition, an international selection of leading coaching psychologists and coaches outlines recent developments from a broad spectrum of areas. Part One examines perspectives and research in coaching psychology, looking at both the past and the present as well as assessing future directions. Part Two presents a range of approaches to coaching psychology, including behavioural and cognitive behavioural, humanistic, existential, being-focused, constructive and systemic approaches. Part Three covers application, context and sustainability, focusing on themes including individual transitions in life and work, and complexity and system-level interventions. Finally, Part Four explores a range of topics within the professional and ethical practice of coaching psychology. The book also includes several appendices outlining the key professional bodies, publications, research centres and societies in coaching psychology, making this an indispensable resource. Unique in its scope, this key text will be essential reading for coaching psychologists and coaches, academics and students of coaching psychology, coaching and mentoring and business psychology. It will be an important text for anyone seeking to understand the psychology underpinning their coaching practice, including human resource, learning and development and management professionals, and executives in a coaching role.