Can fear be used for positive change? Some people believe that fear of any kind should be avoided at all costs because it leads to stress and prevents us from being calm, centered beings. However, other people believe that fear can be helpful, such as when we experience danger or physical pain. Our reaction protects us in those situations by creating an adrenaline rush that allows us to run away or fight back against the threat more quickly. Fear can be either conscious or unconscious, and it can be either rational or irrational. The elements of fear are genetic, cultural, environmental, physiological, and psychological.