Light and Salt

In today's gospel Our Lord reminds us that we cannot have a living, vital faith without good works, "let your good works shine before others." And before the more protestant-minded kick off, I know we are not saved through works but by God's good grace. Though it worries me that most churches and congregations are effectively clubs rather than kingdom builders. How do we move away from a lot of the useless historical baggage we seem carry with us (I obviously speak as an Anglican - it is a big challenge). How do we become more effectively "salt and light" in our world?