It's Been a Good Life is a book by Janet Asimov. It is a collection of Isaac Asimov's diaries, personal letters, and his three earlier autobiographies: Janet's primary role as author was in choosing the entries and occasionally editing them so we would know the people of whom he was speaking.

There was a significant new revelation in the book about Asimov's life. Janet Asimov revealed that Isaac had apparently died of AIDS complications. He contracted it from a blood transfusion following a heart bypass in 1982. She says that the reason it was kept secret was that Isaac did not want to deal with the stigma often associated with having the disease.