The biological parallel of “livelihood” is niche — the position by which an organism, or a community of organisms, supports itself. Livelihood is about managing the position of survival, about doing useful work. All the talk about money on the following pages is meant to impart the lesson that money, like sunlight, is free, but that managing, storing, and passing money on costs something. Those who handle this efficiently flourish in their main purpose.
Another way of saying that is: Livelihood success, whether of an individual or nation, depends on ignoring the pursuit of wealth, and paying horrific attention to the mighty details of money’s pattern. These tools are for that.