Ted Graham Hill

http://www.ted.com/talks/graham_hill_less_stuff_more_happiness.html

Why you should listen to him:

Graham Hill (@GHill) founded the eco-blog and vlog TreeHugger.com, to help, as he says, "push sustainability into the mainstream," with a design-forward style and an international, wide-ranging team committed to transforming complex issues into everyday concepts. It's been called "the Green CNN." The TreeHugger team was even asked to join the Discovery Communications network as a part of their Planet Green initiative, and Hill now makes appearances on the green-oriented cable channel.

Before Treehugger, Hill studied architecture and design (his side business is making those cool ceramic Greek cups). His other company, ExceptionLab, is devoted to creating sustainable prototypes -- think lamps made from recycled blinds and ultra-mod planters that are also air filters.

Hill is the author of Weekday Vegetarian, available as a TED Book on Amazon and Apple's iBooks.

だんしゃりして幸せになろう。

The convenience does not make us happier. I realized with that when I got my car. It brought my life more choices and freedom, but it does not made me always happier. Sometimes before owning the car was the best.

I totally agree with his idea, it is 

less might equal more.  I take that words positively, like I am told that my life style, extreme saving is not miserable!

But we have to spend on something life long stuff, truly make me happy...