The idea of the book is simple: how to get to the other side of the fence, where the grass is greener. The advice are not outdated even today, which makes it sound. However there's not much new for those who have read Rich dad, poor dad. Funny enough that Kiyosaki himself thinks less of people who need to read one more book before acting, at least when he lists stereotypes of investors.
I do think this is one of those books that dismiss the relativity of being rich. Just like Tim Ferris keeps saying that a four hour work week is possible, he doesn't stress the fact that it's possible because other people are working full time for him, instead of him doing the work. That's the true secret of getting rich, and everything else is pop culture to sell books. I did get the same feeling about this book: the author repeatedly states that he has made the most money when ordinary workers have had it tough. If absolutely everybody would follow this advice, it wouldn't work, because for one person to get rich almost always means that there are a lot of people who do not even try.
I'm not against of getting rich but I like to read honest statements about the prerequisites.