What's the point of having it if you don't enjoy it? This article doesn't seem to do justice to those who:

- have enough savings on hand to cover a few months' living expenses - have a sensibly invested pension plan - spend their surplus cash on things they enjoy

I'm sure the book is simply using the popular, but arbitrary and out-dated 'millionaire' tag as a hook for sound financial advice. But if your goal in life is just to be a 'millionaire', you're missing the point.