David Decides about Thumbsucking is a classic children's book that tells the story of a young boy who learns to stop sucking his thumb with the encouragement of his family and a caring therapist. SLPs, orofacial myofunctional therapists, occupational therapists, and parents widely use this book as a therapeutic tool to motivate children to change thumbsucking habits that can affect oral development and dentition. It pairs naturally with Emily's Sister for clinicians building a library of habit-elimination resources, and complements TalkTools oral placement therapy tools used in broader habit-change programs.