Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Dessen Fails To Impress

As a big fan of Sarah Dessen, I bought this book eagerly, hoping for a light but enjoyable teen girl story. I was disappointed.Dessen tells the story of Caitlin, a high school student whose older sister, Cassandra, has been the prettier, smarter, and more talented daughter her entire life. With Cassandra poised to leave for Yale, Caitlin hopes to step out of her shadow. But Cassandra runs away the night before Caitlin's birthday, leaving her family bewildered and sending them on a downward spiral of depression and anxiety.The premise, though clichéd, is interesting, and where Dessen goes wrong is the execution. Caitlin often sounds whiney and trite, and her decent into drug use and abuse is not very realistic. Even the various well written supporting characters cannot save this book. If you're looking for a good teenage depression book, try 'Speak' by Laurie Halse Anderson, or look into some of Dessen's lighter fare, like 'This Lullaby'.