The Take Action Guidebook is a user-friendly guide to the Take Action program, detailing the assessment and treatment of child anxiety. The Take Action program teaches children aged 4-12 years and their families helpful ways to cope with and manage anxiety. It is an evidence-based intervention which includes techniques derived from recent advances in the cognitive-neuroscience of child anxiety in addition to the well established principles of cognitive behaviour therapy (CBT). The word ACTION is a coping-oriented acronym used throughout the program. Children are encouraged to take action against their anxiety. This means children approach their fears and worries using strategies learnt during the program. This practitioner guide uses an easy-to-read standardised layout of content to guide you through the steps covered in each module. It includes an assessment phase for those practitioners wanting to use pre or post intervention outcome measures.The six treatment modules can be used sequentially across eight or ten weeks to provide an individual or group intervention or the modules can be used as stand-alone guides to teach specific skills. This book is designed to be used with the Take Action Child Handout Workbook and Take Action Parent Handout Workbook.