So important to retain your sense of humor at work, bcause you can have real bad days too.
At times like that, I distract myself. I sing, break into a jig, trouble others and so on. My tone becomes sing-song. However, it doesnt always work. And coupled with some sort of problem in work, it can drive me up the wall. In circumstances like those, I become uncannily quiet & a little snappy too ;)