What would it take to make us truly thankful?

What would it take to make us truly thankful? How much would we have to have until we would say we had enough? One of the surprising things I have learned working with the homeless is how big little things seem to them and how little it takes to move them to thankfulness. One day recently at the Bridge--unplanned and unrehearsed--a group of homeless people came to the front and began to sing. I could not hold back the tears.