Hi Maggie,,
You are not alone,
When you get that wrecked, grab something from the freezer, ice, or anything . Hold it in you hand as long as you can. 4-6 secs is usually my time limit.
then take a big breath in raising your arms about
your head, hold for 2 counts
let the breath out loudly [called a cleansing breath] while dropping arms to your sides
repeat the breath 2 more times.
your emotions most likely have come down a manageable level at this point.
here is a website that has light of good stuff to help.
https://www.mindful.org/?s=severe+depressionPeace
Trina