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。