some times "just another work day" is too much after a hard session. IMO it is just as legit to call in sick for mental health reasons as it is for physical health... Provided that you have sick leave and even if you have to fake the flu.

Do you have a list of coping skills?
Deep breathing and slowly sipping water work really well for me but some people need things with more intensity.

What do you do for self care?
Can you call your T?