1: It is you erase the national debt of every country, remove central banks, fractional reserve. Maybe implement a monetary system like Bitcoin.

2: It is only material and everything is not permanent in this world, money, objects and so on, change the paradigm mindset of the people.

3: Change the root of thinking of the society and people, a society with everything accessible without inequality. An example could be Start Trek with the advanced technology of replication or mass production by robots entities.