As the competition in the modern world is more and more fierce,the pressure from education ,career ,or family is more and more severer,so it is essential to keep a good mood to confront all kinds of circumstance.

　　Nowadays depression can lead to a kill that is no longer a piece of news .

Bad mood can cause psychological disease,bite the health of human body, and influence the process of studing and working, the worse even can not lead a normal life like common people.

　　While a good mood often brings heath ,and it is so important that it is always the guarantee of high efficiency of job.

what’s more,if you have a good mood,your humor and enthusiasm also offer a accelerant to the people around you,thus a harmonius,pleasant atmosphere estabilshed,and the efficiency of the group also been enhanced.

　　As for the reasons I referred, to avoid the consequence of bad mood,and make full use of the merits of good mood, it is important and necessary for us to keep a good mood.

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