As a literary genre, a memoir forms a subclass of autobiography. Memoirs may appear less structured and less encompassing than formal autobiographical works as they are usually about part of a life – often a public part of a life – rather than a life from childhood to old age.
Memoirs are commonly written by political and military leaders. Recently, however, several professional writers such as David Sedaris, Augusten Burroughs and Dave Eggers have become famous almost solely for writing interesting or amusing memoirs. Wikipedia, the free encyclopedia.