The document provides an introduction to Cognitive Behavioral Therapy (CBT). It discusses that CBT combines cognitive therapy, behavior modification therapy, and Rational Emotive Behavior Therapy. CBT is based on the assumption that unwanted thoughts and behaviors are learned and can be unlearned. The goal of CBT is to identify problematic thoughts and replace them with more positive thoughts to change feelings and behaviors. CBT uses cognitive and behavioral techniques like challenging negative thoughts and gradual exposure to change patterns of thinking and acting. Research shows CBT is effective for treating anxiety, depression, phobias, and other issues.