Existential crisis, also known as existential dread, are moments when individuals question whether their lives have meaning, purpose, or value, and are negatively impacted by contemplation. It may be common, but not necessarily, tied to depression or inevitably negative speculations on purpose in life such as the futility of all effort (e.g., "if one day I will be forgotten, what is the point of all of my work?"). This issue of the meaning and purpose of human existence is a major focus of the philosophical tradition of existentialism.