is the glass half-empty or half-full

Is the glass half-empty or half-full is question asked of people to find out how they view the world, whether they see it in a more positive and hopeful way or a negative, cynical way. To see the glass as half full, means to be positive and optimistic and hopeful that it will soon fill up. When people see things with the glass as half empty, they are more negative and pessimistic and feel things are half over.