Stress is something different to everyone. Things that some people don't even pay attention to, put others over the edge.
The thing that comes to my mind about stress has to do with the military. When I went to basic back in '84, we arrived and were in reception (not even assigned to a basic training unit yet) and there were guys jumping off the stairs to try to injure themselves to get out, guys trying to kill themselves, guys going AWOL etc. Heck, the only thing they did so far was get off the bus and they were already over their heads.
My favorite saying about the situation, and something that mirrors my belief about stress, comes from (at that is who I always heard it was from) Buzz Aldrin. When asked this question: You are in space, with one hour worth of oxygen and your spaceship is disabled, what will you do for that last hour? Aldrin replied: I guess I will work on the spaceship.