"You have to eat less meat, shop/spend less, and drive less."
People are typically not aware, how much less, as it currently stands. Not a bit less. A lot less. And unfortunately our economy is not prepared for this: We expect people driving to their work place, we cannot buy things locally you could buy locally 50 years ago. And so on. This doesn't even add up to a frugal life. It adds up to not being able to survive. Because the sozio-economic environment doesn't support it.