This document provides an overview of cognitive behavioral therapy (CBT). It discusses key figures in the development of CBT like Epictetus, Albert Ellis, and Aaron Beck. The document outlines characteristics of CBT, including its focus on how thoughts influence feelings and behaviors, its short-term and goal-oriented nature, emphasis on current behaviors, and collaborative approach between therapist and client. Specific CBT techniques are described, such as challenging irrational beliefs, keeping thought records, and assigning homework to change behaviors. Cognitive distortions that can be targeted in therapy are also defined.