Notice your senses. What do you see, hear, smell, feel (touch), and taste? Deep, slow breaths through the nose.
For me crying is da best
Deep breaths. The kind that make you light headed. It resets your nerves and eases anxiety. Also, walk away from the stressful situation. There are many times i have to walk outside (away from noise, kids, etc.)
In the circle/swirl icon tab down the bottom there are some topics with short stories to help with tips etc. one of them is about emotional regulation