Expert Publishing

Can someone write a story about you and your life in their book without your permission? What if the names are changed, but then the author discloses that he is one of the characters in the story, making it obvious who the other person in the story is?? If they are not allowed, what can be done about it if the book is already published?
Can your ex publish a book about your past experience during alcoholism, including specific events that happened in your past that were personal, not something you wanted to be disclosed to your young child when they get older and not considered to be public information???