Regarding the famous"glass half-full or half-empty" case, I have often wondered about the full focus and total emphasis on the glass and its contents. It's possible that when the focus is on half-empty or half-full glass, it becomes too difficult to notice a full pitcher sitting right next to that half-empty or half-full glass. And if you do have a full pitcher available, then does it matter whether the glass is half-full or half-empty? Life offers you millions of opportunities besides what you already have in your hands, in real world. So it's always smart to think about and grab the full pitcher that can fill up the glass several times over, instead of getting worked up about the half-full or half-empty glass. Look for the full pitcher, and enjoy the party! Cheers!