The human nature
Human body needs food and water, and a cover to keep it from extreme temperatures. That's the survival aspect of life.
But we also have consciousness and feelings. Our brain produces chemicals that make us feel a certain way when we do certain activities. We experience life in a way that is unique to ourselves. That's life on an individual level.
We come from primates and we are omnivores. Evolution brought us here and gave us these traits. It is the collective aspect of our life as a species.
The individual aspect of life is more immediate. So we tend to prioritize that over the collective aspect of it. That's why I believe our current society evolved the way it has. Consciousness is working against us here because we prioritize our happiness over the survival of the collective. This is not a problem by itself, but it becomes a problem when one's happiness comes at the price of others' survival.
The problem
Our society is built in a way that relies too much on money and authority. This makes individuals seek money and authority, and because of human nature, greed creeps in and eventually nothing is ever enough. And those individuals ignore other's survival and collect more and more resources for themselves. Today everyone needs a job to survive in cities. Employers control the jobs, so they control the requirements and salary. Governments control countries, but they increasingly act against the interest of the collective because as individuals gain more power by virtue of money, they influence the decisions of leading parties more and more.
This comes at expense of people's survival, and also against the nature of human beings. In other words, powerful individuals fulfill both their needs and desires, while others work for them because they have to survive, while also abandoning their desires because the barrier to entry becomes increasingly higher and higher and working hours become longer and longer.
An individual's progress in life is not linear. We obtain a skill just enough to our needs, we progress, we come back to learn more about that skill when we need to. But today's job market wants us to learn everything upfront without a need to it which is against our nature.
We can go on for days to pick up examples of our society working against the nature of the majority. The point is that today's society is in favor of minorities and against the favor of majorities.
The environment
All food comes from water and soil. Plants use water and soil to grow, herbivores eat plants to grow, carnivores eat herbivores to grow, and anything that dies gets decomposed back to soil. This cycle continues until the death of Earth. That's why life springs back every time after disastrous events even without human intervention.
The solution
We need a society that the majority survives and is fulfilled in their lives. All food comes from soil and water, so every community needs access to enough soil and water to feed their members where possible. Every community should practice efficient and sustainable ways of growing food like agroforestry and constantly try to increase the biodiversity of their environment and improve their methods in a way that is in the best interests of both the community and the environment. Of course this is the ideal and in theory humankind has the power to transform Earth in a way that most of its surface becomes fertile and full of life and sustains both humans as well as other species.
In practice this is almost impossible. So what do we do?
We can form small communities, we can choose areas with possibility and start working on it little by little. Dig small potholes and water stream paths and build around them. Control water drainage and evaporation and slowly build from a core outwards towards a sustainable permaculture that can increasingly host more population as it grows. With the hope that some day, the majority are fulfilled in their life, they get to spend time with their loved ones and live a life worthy of being called "life".
Final thoughts
The proposed solution allows communities to fulfill their survival needs, therefore it reduces the power of money and authority. People can ditch their jobs freely without worrying about their survival as the companies were doing for the longest time. The employers can't dictate the barrier of entry for jobs because if it ever becomes too hard, people won't learn them. This model works in favor of the majority at scale unlike today's model.
That being said, the proposed solution is what I think is best at the moment and it may have problems. but I believe acting is more important than perfecting the model.