In Nordic countries there is The Law of Jante, a set of rules that underline behavior toward individuals:

You're not to think you are anything special.
You're not to think you are as good as we are.
You're not to think you are smarter than we are.
You're not to convince yourself that you are better than we are.
You're not to think you know more than we do.
You're not to think you are more important than we are.
You're not to think you are good at anything.
You're not to laugh at us.
You're not to think anyone cares about you.
You're not to think you can teach us anything.

Although Scandinavians themselves occasionally make fun of this law, it helps to create an extremely friendly and cooperative society. Modesty and respect for others are highly valued. Moreover, this law discourages people from being arrogant and boastful.

The 4 Principles That Make Scandinavians the Happiest in the World