These posters from the WWII era illustrate how it used to be not only acceptable, but expected, for everyone to change their behaviors and habits for the 'greater good'.

Carpool! Plant a garden! Make do!

These ideas not only promote a greener, more sustainable lifestyle, but encourage engagement in the living of your life. Know where your food comes from. Make it yourself. Take pride in doing things better and cheaper and more sustainably. It can be really fun to Do It Yourself.

Alice Waters has something similar to say, which she calls the "Delicious Revolution": http://www.chezpanisse.com/pgdrevolution.html