How do career guidance practitioners exercise professional judgement in contexts shaped by uncertainty, competing demands and constant change? Drawing on sociology, policy implementation research, street-level bureaucracy, and theories of improvisation, Ida Holth Mathiesen challenges conventional understandings of professional practice as the straightforward application of methods or policies. Instead, she demonstrates how career guidance is continuously enacted through professional judgement, relationships, organisational conditions and the realities of everyday work. This book:¿Introduces the concepts of contextual, political, and relational balance, showing how practitioners negotiate tensions between local needs, policy demands, and the interests of guidance seekers. ¿Develops the innovative ideas of Improvisational Career Guidance and Mission Musicality, offering new ways to understand professional discretion, responsiveness and the collective negotiation of career guidance's purpose. ¿Explores the contribution of career guidance to participation and democratic engagement, highlighting how practitioners support individuals while responding to broader social and structural conditions. Bringing together diverse strands of research and theory, this thought-provoking volume provides a rich conceptual framework for understanding professional practice in career guidance and beyond. It will be essential reading for researchers, postgraduate students, policymakers, and practitioners seeking to understand how professional work is negotiated and sustained in an increasingly complex and changing world.