Sustainability and civilization

Imagine you lived on a planet that has a population of 7 billion people, and all of those people are you(clones or whatever). How can you make a profit? There's a limited amount of resources on that planet, but potentially infinite amount of money which you use to buy these resources, but that money also requires those same resources to exist (paper money; electric money requires electricity, servers and stuff which is made from those resources). So in order to get natural resources(that converts into something, by using more resources e.g. burn wood to forge metal) you'd have spend those same natural resources (make money, which is burning excess calories= food, which is a natural resource). Then there are taxes, you pay tax when you fix an oven hinge and the baker gives you money to compensate your effort, but you'll have pay tax from that money, so you'll get 90% compensation from 100% of work. Then you go home and want to use that money, but using that same money is taxed again, because of Value Added Tax. So you give 100, you'll get 90 back in some other form and to convert it to something useful you'll lose let's say 5 more(VAT), that's 85. So in order this to work, you'll have to be overpaid, but who's paying it? The baker? That won't work either, so where does this energy come from?

First Law of Thermodynamics - Neither matter nor energy can be created or destroyed. In order to grow(physically as a person, city, society, civilization) you'll have to take more resources to make that growth and more resources to maintain its expanded state. Let me remind that those resources are limited and the more is taken, the less there is in circulation(because humans can't give anything back to "nature").

Implementing arbitrary and artificial restrictions and ideas into the physical world isn't practical nor sustainable. "Society" and "civilization" are both ideas, physically non-existent yet physical energy is used to maintain them; to make them exist. It's like a fire, it exists as long as there is fuel put into it, as long as there is something to burn. But nothing will ever be enough to make it self-sustainable. Without it it's cold, so the only thing logical is to maintain it at the rate set by the renewability of the fuel it uses, and not to expand it beyond that.

tl;dr: so I suggest "humble sovereignty" as a solution to everything, what that means is: take only what you need and give only what you can. Everyone ultimately is responsible only for themselves and to themselves. I define evil as "unnecessary selfishness"