What is too much?

I read an interesting book during the flights on the way from Oulu to San Francisco. It was "Enough: Breaking Free from the World of More" by John Naish. It's interesting how Naish explains our consumer habits by survival instinct that was vital when we still lived in caves. But the question remains open for what happens if we all learn to realize what is enough and that we just don't get any happier after reaching a certain standard of living? The whole current economy is built on constant growth.

I'm not sure how much the book affected me. Maybe I didn't buy as much clothes as I would have thought although they are crazy cheap in US compared to Finnish prices.

One change I decided to make is that I will watch less TV in the future and will lock the Disney Channel so our younger kid can't watch it too much.