The document discusses cognitive distortions, which are inaccurate or inflated thoughts that can negatively impact one's emotions and behavior. It provides an overview of cognitive distortions, noting they were first developed by Aaron Beck and made popular by David Burns. The document explains cognitive distortions can reinforce negative thinking and problematic states like depression. It states the general solution is to challenge distorted thoughts and replace them with more accurate perspectives. The document then lists and describes 12 specific cognitive distortions.