One of the primary components of human development is the desire for self-benefit. According to Maslow's hierarchy of wants, people should first endeavour to survive before attempting to integrate into a community. Humans naturally put their own survival and well-being first because of this. But as time goes on, this attention to self-interest starts to be translated into activities that are helpful to the community. The community can profit from the advantages that individuals gain from their selfish behaviour if its members behave honestly.
RE: Hustle with a mindset to achieve gain