This document provides an overview of cognitive-behavioral therapy (CBT). It explains that CBT focuses on how thoughts, emotions, and behaviors interact and influence each other. It describes key CBT concepts like thought distortions and the A-B-C model. The document gives examples of thought distortions and provides strategies in CBT like thought records and experiments to challenge irrational beliefs. It concludes by reviewing evidence that CBT is an effective treatment for depression, anxiety disorders, and other conditions.