There are a lot of people so invested in and devoted to their job that losing it is akin to the death of a loved one. I can certainly see how those people can suffer great emotional distress upon losing it. I think it just depends on how you view your job: is it just a means to make money and support your family (I think most people fall into this category), or is your entire identity wrapped up in what you do?
But yeah, if you lose your job as a line cook at Olive Garden you shouldn't stress too much over it.