Well, if you leave a fast food job because of stress, you'll never be able to function in a real job.

Trick is to put it in perspective, didn't get the order right? So what, it is just a burger. Someone was rude to you? That is their problem. It is just a burger.

In the grand scheme of things, your job and quality of your work does not matter. Sure, go in and work but, don't stress. It isn't like you're saving lives or even providing valuable service. Youre making burgers for hungry people being lazy.

It is just flipping burgers.

It isn't that involved, challenging or detailed. It matters to no one nor should it.

It is just a burger. It will be eaten in 5 minutes and forgotten.