Dietland by Sarai Walker

Plum Kettle is an overweight young woman who thinks that if she loses enough weight her life will be perfect.  She is tired of being judged by other people because of her weight.  Having tried many unsuccessful weight loss programs she pins her hopes on weight loss surgery.  She hates her job as a columnist for a popular teen magazine but must keep the job so that insurance will pay for her surgery.  But destiny places Plum at Calliope House where she learns to live life on her own terms.

This book is both humorous and suspenseful as Plum comes to terms with her weight and begins a new life.