This again?
(Book)

Noah Nicholson has plenty to be grateful for. He has solid grades and great friends, he's finally becoming closer with Lucy Martinez--his crush since second grade--and he just might have a chance to be elected class president next week. But despite all that, Noah fixates on the should've-beens and could've-beens and the belief that he can make his life perfect. Then Noah comes upon an opportunity to do just that. At the local bowling alley, Noah runs into someone most unexpected: himself. The look-alike is him from nine days in the future, and he insists that if Noah does every ridiculous thing he says--from quacking like a duck in science class to painting himself green--they can achieve their dream of perfection. However, fate may have other plans, and Future Noah may not be entirely honest about what he's doing there&

Ages 8-12.,Little, Brown and Company.