Michael Eisner is a well-known figure in the entertainment industry, but he is not known for being an author. He was the CEO of The Walt Disney Company from 1984 to 2005, and has been involved in many successful films and television shows as a producer and executive.
However, there is no record of him writing any books or published works.
It's possible you're thinking of someone else, or you might be confusing him with someone who has a similar name. If you have more information, I might be able to help you find the right person.