题目内容：

Do you feel 1     difficult to be happy all the time? Now I’ll give you some tips(秘诀) 2       how to make yourself happy. One way is being   3      (self) because unselfishness is the key factor   4      (require) if you want to get along well with others. By   5    (say) being unselfish we mean we   6     not want everything our own way or demand the best share of everything. Another way is to look for good points in  7      people. You’ll find most people pleasant to get along with and it will surely make you happy. Third, you cannot expect to be too perfect,   8      don’t be too unhappy when you make a mistake. Everything will be OK if you try to make things right. Finally, it is important to remember that while you are not  9      (bad) than others, chances you have may not be much better. In this case,  10      surest way to be happy is to think yourself above other people.