An autobiography is the story describing a person's life that is told by the individual himself. Sometimes, an autobiography can be written with the help of a co-author, as long as the story remains in first-person.
Autobiographies can take many different forms; oral or written records of a person's life story often turn into books, audio recording and movies. Intimate writings produced during a person's lifetime, including letters, diaries, and journals can be used for inspiration in the memoir; these elements often play a large part in the writing of a formal biography that is sent to publication. Because of language and writing barriers, there are very few biographical works that were written before the 15th century.