A diary is a personal journal where individuals can record their thoughts, experiences, feelings, and daily events. It serves as a private space for self-expression and reflection, often used for both emotional and creative outlets. Diaries can be simple or elaborate, and many people use them to track personal goals, memories, or milestones. Writing in a diary can also be a therapeutic practice, helping to process emotions and gain clarity. In addition to personal use, diaries can serve as tools for planning, organizing, and documenting important events or ideas over time.