I think the idea behind this book was original and neat. The book starts out with eighteen-year-old Devi, who has just been dumped by her long-time high school boyfriend, at the mall contemplating what she would tell her younger self if she could. She ends up dropping her cell phone into a fountain and is then able to call her fourteen-year-old self, whom she basically bosses around for the entire book in order to try to achieve the outcome she wants (to get into a good school, to keep her friends who she lost because she was so wrapped up in her boyfriend, to help her family, and to stay away from the boy her dumped her).
The book leaves you with some good lessons in the end: it's okay to make mistakes and even if a relationship doesn't work out, it's worth the heartache if it shapes you as a person and teaches you something.
I guess the reason I only gave the book two stars is, while it was a quick read, it didn't really grab my attention at any point and make me HAVE to keep reading. Yes, there's a good plot, and yes, you feel like you know the main character, but that's about it. You never know any of the supporting characters because they keep changing. And, older-Devi is kind of annoying!