Idiocentric is the term given to someone who will tend to do what is seen as best for the group,even if it means giving up personal goals.

Idiocentric

Characterizing individuals who are more self-reliant and independent, prioritizing their personal goals over group goals.

Group

A group refers to a number of individuals who have shared interests or goals and are perceived to be bound together in some manner.

Personal Goals

Individual objectives or aspirations that one strives to achieve, which can motivate behavior and guide actions.