It is very rare to get through a single day without coming across at least one stressed person.
So, as you've opened the question, let me ask you:
Have you developed a mechanism or your own method to deal with stress?
It could be anything: Thinking of a joke, meditating, thinking of God or just shifting your mindset.
Personally, I try to shift my focus or act on the matter, so that I choose peace of mind.
What about you:
How do you not allow things to stress you?