Henri's Great Adventure was written for use by parents, therapists, teachers, special-education teachers, and all individuals who work or interact with gifted or twice exceptional children. The intent is for the book to be used as a tool to teach interventions to assist such children with emotional regulation. The issues Henri faces in the story (asynchronous development, sensitivity to sensory input, teasing/bulling, difficulties adapting to changes in schedules, and emotional outbursts) are common experiences for gifted children. The interventions discussed in this book are modified and adapted from research on mindfulness cognitive behavioral therapy, adapted dialectical behavioral therapy, relaxation techniques for anxiety, and other behavioral interventions. This book was written as part of a Doctoral project in partial fulfillment of the requirements for the degree doctor of Psychology. A full copy of the doctoral dissertation can be accessed through Alliant International University, Los Angeles Campus, 1000 Suite 5S Fremont Avenue, Alhambra, California 91803. www.alliant.edu.