Admittedly my daughter-in-law can work in non-ER situations too, so perhaps that's an element of what is different about the two roles.
Ah, the panic attack. I know these horrors well. Murray would have up to four or five a day, as well as suffering from the “the 4 a.m. Show” in which you find “your troubles and terrors ripping into you with a gusto allowed them by fatigue and the disappearance of proportion. I wonder why 4 am is such a significant hour for depression sufferers? I know 4 am well, but the same process can start earlier at 3 am too. Though I haven't suffered depression for some time, ordinary anxiety can bring on these early morning calls, when you wake with a snap and suddenly your brain is in full locomotion mode. It takes quite a bit to get it to settle down again, although I've found that reciting old Psalms and poems I've memorised helps to distract the brain that wants to go and do something now! The brain likes you to get up rather than lie in bed, and sometimes that's the only solution: getting up and taking a pen and writing down what is bugging you. Writing it out of your head certainly helps.
Another poet, Billy Collins, has an apt line regarding this in his poem Journal, where he writes:
And when my heart is beating
too rapidly in the dark,
I will go downstairs in a robe,
open it [the journal] up to a blank page
and try to settle on the blue lines
whatever it is that seems to be the matter.