The book does have a good lesson. However, it's a bit preachy, and most kids do not appreciate that in their books. I also wasn't happy with the way that the mice where characterized. The athletic, quick mice were the "good" ones who were able to adapt and find new cheese. The bookish mice, who dreamed of getting good grades, were the stubborn ones who were unable to handle change well. It might be subtle, but we really don't need to be telling kids that enjoying books and education won't get you far in life.
I didn’t care for it much, for kids. Interestingly I think I got more out of it than my students. They got really squirmy about 3/4 of the way through. And its a rather long book. I’d break it into two parts with a discussion about what it means after each. I am a hem-er and haw-er for sure. I don’t think the book will help me think differently at my age. Maybe it would inspire some kids.
See my review on Who Moved My Cheese. The concepts taught are basically identical, except this book tells the story with a more efficient use of words to make the point and has prettier pictures.