The document discusses how the brain seeks to manage uncomfortable feelings through substance abuse or addictive behaviors even after abstaining from our primary addiction. When we remove an addiction, the brain experiences a traumatic "cortical defensive bypass" response that leaves us vulnerable to relapsing. Recovery behaviors help reduce this fight or flight response to triggers and uncomfortable emotions. This bypass impairs our ability to consider consequences by limiting access to parts of the brain like the visual cortex. The document also mentions mechanisms of alpha and theta brain waves related to calm and reactive sensory input states.