I felt quite moved by the beginning few years of the book. When Emma was in her 20's. I am also in my twenties and feel as though I am not living my full potential and I think she did not start doing what she loved until she was at least 30. A little side note to how I related to this book.
Anyway back to the movie. I loved the book, found that it was refreshing and a great way to span nearly forty years. The movie I also thought did a great job at hitting the important points of the book. There a few discrepancies that I noticed. In the book Ian is not funny at all, actually quite annoying as he tries to make every moment a stand-up moment. In the movie he made me a laugh more than once.
I also found that the chemistry between the Emma and Dexter was quite palpable in the movie where as in the book they were great friends and really needed each other a lot of the time, but I found that I only would have seen the chemistry in their thoughts. Which is maybe why they needed to show it more in the movie because we do not have the luxury of reading their thoughts.
I thought that Anne Hathaway did a great job, her accent (as she would probably attest to) was a bit shaky at times I almost thought that she was Irish.
I give it an 8/10