I am outlining a novel in which the protagonist is cursed so no one can form long-term memories of her. She can start a conversation with someone, but that person can only remember what was said in the last half hour, more or less. If the protagonist tries to have an extended conversation, then she has to keep repeating herself, but even then, it is impossible to make true progress. I am considering framing the novel as a conversation between the protagonist and the character who was her best friend until the curse began and the friend forgot everything she knew about the protagonist (but not the other way around). The conversation takes place a year or two after the beginning of the curse. The protagonist has with her a journal she has written in that time; she reads some of the entries, recounts what she remembers of the events she has experienced, and answers her friend's questions and comments. That is how the bulk of the story is told. The conversation is a cycle. Maybe the book begins with the answer to a question, and it ends with the question itself. Maybe it begins with "However, ..." and ends with the thought that is contradicted or amended by the "However, ..." sentence. There is never an introduction in this conversation, i.e. it is not as if the conversation ends at some point in the book and then begins later; instead, it continues without interruption. There is, therefore, an element of impossibility, since it is implied that the conversation is a cycle with no beginning or end. That is the intended effect. The challenge is to make it internally consistent enough that it works. This seems very familiar to me. Are there any works of fiction (books, movies, or otherwise) told in a cycle like this, where the prose (or audiovisuals) itself leads from the ending into the beginning? The first title that comes to mind is Finnegans Wake, but I feel like there must be others. Seeing successful examples of this technique might give me ideas for how to pull it off effectively.