자기 (Self) refers to an individual's sense of identity and personal existence. It encompasses thoughts, feelings, and experiences that define who a person is. The concept of self is central to psychology and philosophy, influencing how individuals perceive themselves and interact with the world around them. In various cultures, the understanding of self can differ significantly. For instance, in Eastern philosophy, the self may be viewed as interconnected with others and the universe, while in Western philosophy, it often emphasizes individuality and personal autonomy. This distinction shapes how people relate to their identities and communities.