3 signs you're living beyond your means
http://money.cnn.com/2017/09/19/pf/living-beyond-your-means/index.html
Considering that 30% of Japan's citizens don't store money at all, while nearly half of the US citizens cannot keep a good balance between income and expense, Japanese seem to be good at storing money.
But, their style is not suitable for boosting economy. More money people want to save, less consumption there would be.