This book is a passionate reflection of the belief that the ideas embedded in the theories of living systems explain how organisations really work and offer insights into how to intervene effectively in complex systems. The authors have been working with these ideas for many years, exploring the implications for leadership and for organisational processes, and experimenting with practices. This book shares what they have learnt. The intent is to enhance your capacity and capability to intervene effectively in your own organisation. This toolkit is aimed at anyone leading organisational change. For those of you commissioning organisational development, or putting in place OD processes, there are specific practices here that we hope you find useful.