First of all it is one of my favorite books. It's a shame they messed it up so bad. In the book the most important thing is the list. In the movie it's not that clear anymore. Zoey is the best of friends in the movie, where in the book she was at some times really mad at Tessa because of the list. They skipped the most parts of the moments she spend at doing the things on her list. As saying yes to everything for one day. The brother acts like he sees fun in Tessa dying. Adam is not there when she eventually dies, while in the book he was. When you haven't read the book it is a very sad and good movie and I would vote something like 8/10 or 9/10. But I was expecting a movie representing the book. That was very disappointing.
Review of Now Is Good
