Here is an incredible free tool from the Post-Carbon Institute to gauge food self-sufficiency in a specific region.
Here’s a snippet, the introduction to the section Part 2 - Appropriate Way s of Thinking to Respond [to the dilemmas of modern life with perpetual growth on a finite planet]:
“Here’s our predicament. Our entire way of life, even the food that sustains us, relies on a rapid drawdown of resources and is undermining environmental support systems. One of the steps we need to take is to clear out old assumptions and modes of thinking that developed within today’s culture and adopt new mindsets that ground us, so we can adapt to novel circumstances. “
Download both documents below!