This society sounds lonely, boring, dangerous and stressful. You should visit me in Japan. It's not perfect by any stretch but they stumbled upon some secret sauce.
The secret sauce is a very, very well honed sense of shame. It's a natural prophylactic against humanity's innate douchebaggery.
Shame is just another term for social-contract. I also think the balance between internal and external influence is great. They maintain a national identity without getting too cocky.
