Irving Mansfield Mansfield gave up his career to help his wife promote her book, "Valley of the Dolls", which was published in 1966 and became the best-selling novel of the year. Mansfield continued to work with his wife in promoting her subsequent novels, "The Love Machine" (1969) and "Once Is Not Enough" (1973), both among the top three sellers of their respective years. Mansfield also executive-produced movie versions of his wife's novels "The Love Machine" (1971) and "Jacqueline Susann's Once Is Not Enough" (1975), as well as a 1981 television mini-series version of "Valley". Mansfield met Jacqueline Susann, then an aspiring stage
Jacqueline Susann loathed the film version of "Valley", believed this adaptation was even worse. Susann's third novel, "Once Is Not Enough", was published by Morrow on March 20, 1973. "Once" is the story of January Wayne, daughter of a famous film and stage producer, who is hospitalized in Switzerland for three years. When she returns home to New York City, she finds that the world is far different from the one she had left. January contends with the social upheavals of the late 1960s and early 1970s in a graphic, driving story. Susann was candid about the theme of the book, stating