To make some very quick points:
Some type of representation would at least be needed to communicate with foreign societies. Additionally, it could be argued that this belief does not prevent inaction, so if a natural disaster were to occur, people would not need to go help those affected. For this reason, disaster relief services would be necessary.
So some small form of government would probably be required. Do citizens pay taxes or anything like that to this government?
How is wealth distributed throughout the society (is the majority of wealth in the hands of a few or the hands of many)? Would the market be free or something more socialistic/communistic?
As for mental growth, could you elaborate?
Disaster relief? I was upon the circumstances that each individual person would be involved in a neighborhood-type atmosphere. One might believe that inaction would inconvenience other people more than action would inconvenience one's self. Admittedly, there are arguments against, but neighborly attitudes were once prominent and still are in some communities, still displaying such actions.
To cover the gaps of self-government, a council might be in order, with each individual community participating in the approval or denial of a given hypothesis and then action upon that hypothesis should it be found to be true. Each leader of the unit councils would participate in a larger council, and so on. Such councils or a sufficiently broad level would create groups or individuals willing and able to communicate with other communities.
To state clearly, Inaction that would inconvenience more than similar and opposed action would not be permitted under this belief.
In addition, personal preferences would be intact in full, as well as
freedom of speech as a default.