Drop in the sea

The knowledge of 'being part of something larger' (God's plan/gift from God) isn't fortified by increasingly personal and individual society and culture. Personal computers, accounts, phones, custom shoes... What supports the idea of a selfless world? What supports the idea of being a servant to others and humbly contributing to 'the whole'? Why and/or when do we feel compelled to act for 'the greater good'?