I have had my piece of cake, I don't need another piece.

Contentment is the word.

Can we, average human being able to reject another piece of cake, another gram of gold, another carat of diamond, additional square footage of house, another piece of that green dollar?

Is it possible?

Are we out of our mind to reject another piece of that guey, chocolaty brownie?

Apparently it had been done before, as Norah Jones's interview in 60 minutes.

She was content with only one piece of cake.

Can you?