Everyone is dissatisfied with some aspect of their appearance at some point. However, when the concern and preoccupation with a flaw dominate one's entire life and the reflection in the mirror becomes unbearable, it may indicate body dysmorphic disorder. People with body dysmorphic disorder feel ugly, unattractive, and deformed. They suffer from their appearance, hide and control the perceived flaw, and increasingly withdraw from professional and social life as well as from social relationships. This guide is aimed at individuals suffering from body dysmorphic disorder. It provides information about the condition, the causes of the disorder, and current treatment options. A particular focus is on describing the approach used in cognitive behavioral therapy. The guide presents initial steps to take.