When you got a not good score,and got into troubles did you feel angry with others ?
If your answeis are yes ,it seems that you are not optimistic.Things don't always go as what you think.In this world never avoids hurt and pain..We should think how to be happy.
As the saying goes that :There are two things to aim at in life: first, to get what you want; and ,after that, to enjoy it , only the wisest of mankind achieve the sceond. .We should learn how to enjoy the things we have and we'll be more happy .In my opinion,more and more people think they are not happy these days which means they are noe have the attitude of optimistic.And the key to the optimism is to enjoy what you have.