Can I just venture this:
I had a lecture on stress from a retired USAF Flight Surgeon at RAFCAM who explained that stress is a perfectly natural phenomena. In fact he offered that it was actually unhealthy to live without it!! Of course, everything in moderation, my lad, everything in moderation...
He also seemed to know what he was talking about - kinda strange for RAFCAM these days.
LJ
PS I am an very-slightly stressed Flt Cdr at the moment...read into that what you will; but I hope to see you all at the Cenotaph in 2035!