I would go a little bit farther than Farkel's message in that it isn't even important that it's the same old story, it's just the fact that it IS a story.
I read this years ago when I first left, and of course it was fun and exciting - and now I see it more as a spiritual candy of sorts. The thing is, making it into a story just dramatizes it, and when you do that you end up getting caught up with the drama rather than the valuable things it has to convey. It's sort of like the milk and solid food thing. I don't say this to put it down or anything, as I said it was fun to read for me at the time - but I just have to call it like I see it.
Spiritual truths are simpler than the stories we hear about it, and getting some good feelings about those stories doesn't mean you get the truths, in fact in most cases it would appear it's missed because it's just so much fun to feel good. People will use meditation in this way. The problem is when you just want to feel better, whether you realize it or not, then you don't see through the things which cause you to suffer in the first place (or the fact that you are just doing it to feel better) - it's a bandaid in that case. In short, the form of presentation is what probably appeals to most about the Celestine Prophecy, but of course getting hung up on the form would be missing the point. When you're ready for an insight, you'll be able to see it in the most mundane places, like some clown's message on the internet.