题目内容：

请你根据以下提示，并结合事例，用英语写一篇短文。

It doesn't really matter whether your glass is half empty or half full. Be thankful that you have a glass and that there's something in it.

注意：      ①无须写标题；

②除诗歌外，文体不限；

③文中不得透露个人姓名和学校名称；

④词数为120左右，如引用提示语则不计入总词数。