100 Days Happier is the companion app to the best-selling book of the same title. Created by author Domonique Bertolucci, the 100 Days Happier App will help you to start each day in the right frame of mind. 100 Days Happier will deliver a new inspiring message each day inviting you to make a small, simple change in the way you think or act, that will make you feel happy. Based on the best-selling book, The Happiness Code and its Ten Keys, these daily messages will inspire you to be the best you can be.