Create both virtual and temporal opportunities for people to experience intense austerity and deprivation, intense aloneness, environmental disaster, the dangers and helplessness of war and combat and the anomie of purposelessness. These would be for adults only. Less intense versions teaching the same lessons to children could be created. And of course counseling about the healthy integration of these virtual/temporally arranged experiences would be an essential ending part of the process.
The point is to enable people to deeply learn the mental virtue of appreciation of abundance, freedom, free association, friendship, peace and an ecologically sane and sustainable world.