Great article
here. Sure, it is mostly a piece promoting someone's new book, but I think it is sound advice nonetheless.
The only quibble I have with the Millionaire Next Door guys is that they treat becoming a millionaire as an exceptionally worthy goal in and of itself. Nothing wrong with gathering assets, I think everyone should. I don't think that living like an ascetic is worth it, if you can afford not too. Don't forget to stop and smell the roses etc.