We have already talked about eating less, and having restaurants serving less, but now we need to mention cooking less.
As our household goes we seem to always have leftovers, and most times they get eaten, but I am making a conscience effort to cook less food each day. Its better we run out of food then always have extra. Because at some point the extra is going to get thrown out. So the ideal would be to shop small, cook small and throw nothing out. This not only helps the world but the financials of the household. It may sound like an easy thing but try it out. Cook less and waste less, eat less.