An autobiography is a detailed account of a person's life that is written by that person. It typically covers the writer's entire life, from birth to the present day, and includes personal details, anecdotes, and reflections on the writer's experiences and growth. An autobiography is usually written in first person and often includes information about the writer's family, education, career, and significant events in their life.
In the context of your own life, an autobiography would be a written record of your own experiences, thoughts, and feelings. It would be a personal account of your life, written by you, that captures the most important events and experiences that have shaped you as a person.