In high achievement norm, every single state of a certain social group will constantly motivate themselves to make improvements or to produce the best possible results on their tasks within their group.
This is why the phrase "always try to do their best" Or "Constantly thrive for improvements" always prevalent among high achievement groups.
Typically, high achieving social group wouldn't be formed naturally. It has to be formed through a strict and rigid selection process in order to eliminate people with undesired behavior.