Post-traumatic stress disorder is a type of mental sufferance that can develop in people who are exposed to traumatic events, caused by humans such as wars and sexual exploitation, or by life natural events, such as death, incurable illnesses, earthquakes, fires, etc. Although the exposure to stressful life events is part of the human life, some individuals are more vulnerable than others and, consequently, they suffer more than others. We will address these questions and provide some guidelines on how to face them and reduce their harmful effects to the least possible.