as long as we live in a debt/interest-based money system, we can change all we want, it still will be in our "rational" interest (
within the confines of the present economic system, not universally/in life generally!) to be selfish, to exploit people and the planet, or just toil in industry. I agree that we need to change, and our changing will be the spawning ground for the change in the money system, but if the money system never changes, nothing will change.
how to change it.. I don't know, I wish I did. I can only hope that the economists will begin to see the fundamental problem in the money system and start to find new ways (such as negative interest money, to cite only one of many alternatives). but then again it is somewhat naive to wait for other to change

I've been thinking a lot what to do with my life, and I think I shall commit myself to finding ways to decentralize food production and make permaculture practices available to a lot of people, I am convinced that this is a very powerful solution to at least part of the problem. people plant thujas and firs in their gardens and then go to the store to buy apples and berries, it's insane.
anyway, whenever I think about problems in the world, and I wonder why they are there, it boils down to money most of the time. I wouldn't be so fast to say that capitalism is mainly a psychological problem, the problem is systemic, because it makes it rational to act in ways that are against community, spirit, nature and ultimately oneself. the psychological problem comes after that. humans tend to try to live in accordance to whatever scheme they live in, hunter gatherer or banker, and one of the most fundamental things that need to happen in this world is to change the scheme so that it is (AGAIN) rational to be freely giving, to support community, to make new connections, to take care of the earth etc.
this is not to say that all problems will vanish, but it will make it a shit ton easier to do something about them. all these attempts to save the so-called environment are somewhat futile (if noble, though), because if capitalism runs out of fuel (natural, social, spiritual and cultural capital that is being sold out and monetized, hence the talk of "opening new markets") it will find new things to devour. I'm secretly hoping that it will run out of fuel so that it can finally break down, but I am afraid that it could easily continue for another 100 years like that. what is certain, though, is that it
will break down, the moment it was created its demise was sealed. I'm just hoping it will be sooner rather than later.. meanwhile we can work on solutions, create gift-circles, exchange-places, free parties, learn about gardening/permaculture, just generally learning how to emancipate yourself economically, as an individual and a community.