Existentialism is a field of philosophy that explores the purpose and meaning of life. According to this philosophy, life is inherently meaningless, and it is up to individuals to create purpose and meaning to their life. This implies that every individual on earth is experiencing an existential crisis.
Most people ask questions about life, but it is when such questions become obsessive and negative that the questioning becomes a mental health problem. It is also normal for people to go through periods of negativity and anxiety. However, when such feelings and emotions accumulate to an unhealthy level without resolution, the individual is at risk of falling into despair, anxiety, and identity crisis. Such a person may need mental health intervention.