One effective way of destroying happiness is to look at something and focus on even the smallest fault.It's like looking at the tiled (铺瓦的) ceiling and concentrating on the space where one tile is __1__.
Once I heard a bald man said，“Whenever I enter a room，all I see is hair.” Once you've __2__what your missing tile is，explore whether acquiring it will __3__make you happy.Then do one of the three things: get it，replace it with a different __4__，or forget about it and __5__the tiles in your life that are not missing.
We all know people who have had a relatively __6__ life，yet are essentially unhappy while people who have suffered a great deal but generally remain happy.
