Clinical psychologist Dr. Gwendoline Smith (AKA Dr. Know) provides an informative and accessible guide to understand and manage your feelings. The Book of Knowing contextualizes the basics of cognitive behavioral therapy for anyone new to these concepts. In The Book of Overthinking, Dr. Know expands on the topics of overthinking, ruminating, and worrying — common symptoms of anxiety. By using her clear advice and tangible examples, you'll find powerful strategies for addressing these issues in your life.