Instruct: Classify the given review into positive or negative sentiment.
Query: Eternal Frustation

I have not yet finished this book. It's taken me over a year to get to the halfway point. Why? This has to be the most frustrating book I have ever read. Every other chapter is the beginning of another book being read by the main character. Ever searching for the novel he wants to read, encountering publishing errors which have handed him one wrong book after another. With each new book beginning, I became engrossed in that particular storyline and then Mr. Calvino would change books on me. After reading three chapters I became so frustrated I had to put the book down for a week.I love this book very much and wish I could finish it. If you have a problem with cut-off stories, don't read this book, otherwise, enjoy.