Your view

There is a said : "when you look at a half filled milk cup, people who look at the upper part will said it is empty, but people look at the bottom part will said it is full with milk." 

 People always sad will choose to look at the upper part of the cup, happy person will do the other way to look inside the cup and said the cup was full because of the milk.

We might not have the chance to filled in the cup with what things inside, but we do had the equal chance to look into the cup and see what we want to see. Be a happy person do not require by other people approve, you yourself must first approve you to be happy~~ happy come from anywhere :)