I'm sorry that you're struggling cc..... Starting a new job would create some anxiety until you start to get comfortable

Have you ever tried meditation/mindfulness?... My old family doctor swears by it.... big hug.... xo

to the best of my knowledge, "my nerves are shot" is just a figure of speech. it never occurred me to ask a doctor, but i would be surprised to find it as an official diagnosis.

buttttttttttttaaaaaaaaaaaaaa. . . anxiety can cause significant physical damage and is worth addressing. adjusting to a new job would be a major anxiety producer in my broken brain. extra therapy measures needed. anxiety sucks, both literally and figuratively.

what have you tried so far?

for what it's worth
i'm just a patient, but i swear by meditation and mindfulness, also. it isn't easy to learn or practice, but it works when i work it.

It depends on what nerves you mean, ccleaver. The Chronic Kidney Disease I've got from the doctor who gave me too much Seroquel for my PTSD kills nerves in my body. My kidneys don't send enough oxygen to the extremities of my body like my brain, hands, and legs. So I pass out from lack to the brain, I can't work my hands, or I can't walk, depending on the function of what's left of my kidneys that day. I hope for nerves that CAN be shot, then, so I can have an active day.

But I know how you meant the expression, and what I recommend is that you go to the website of the best PTSD doc online for how he helps folks like us function when living with PTSD. Here you go:

https://www.pete-walker.com/

Pete Walker is a licensed psychotherapist, MFC 25210, with degrees in Social Work and Counseling Psychology. He is a "general practitioner" who has a private practice in Berkeley, California, in the serene Claremont Hotel neighborhood. He has been working as a counselor, lecturer, writer and group leader for thirty-five years, and as a supervisor and consultant of other therapists for 20 years.

Pete specializes in helping adults who were traumatized in childhood, especially those whose repeated exposure to abuse and/or neglect left them with the symptoms of Complex Post Traumatic Stress Disorder [Cptsd].

Here's a sample of what's there, so you know that if you go there you get practical help. There's a lot more there, too.

Strategies in times of flashbacks
1. Say to yourself: "I am having a flashback".
Flashbacks take us into a timeless part of the psyche that
feels as helpless, hopeless and surrounded by danger as we
were in childhood. The feelings and sensations you are
experiencing are past memories that cannot hurt you now.
2. Remind yourself: "I feel afraid, but I am not in danger!"
“I am safe now, here in the present.“
Remember you are now in the safety of the present, far
from the danger.

(and then there are 11 tips more, and that's just on this page of the web site. I suggest checking it out).