I read a book called MM personal
it was about Marilyn Monroe and the contents of her file cabinet
basically a lot of paper recording all her business transactions, receipts, correspondance, photos she sanpped on her camera, doodles etc.
It got made into a book for curious fans after her death, but shed already written her autobiography/memoir which I think was published before she died called My Story
I am not at a stage where I want to tell or share my life story though, but in book format its easier for people to read it. Then maybe later it can be turned into a movie.
artists and photographers often keep portfolios of their work its not always online.