Being concerned about your job will enable the person to work better instead.
Man you sound like kool aid drinking slave labour. I would say with ought a doubt that stress equals poor performance, rash decisions et cetera. My position is that aviation is one of the most stressfully industries and least reliable but there can be great personal and financial reward if you play your cards right.
Now to give credence in the quote, a determined man thrives in this environment pushes hard to gain experience will have the upper hand, but how is this different from any other industry.
Forgive me but I have seen too many people bow at the industry and management. Arse kissers have their place I suppose. My allegiance is to the $$$ with a love of aviation. Stress reduction is almost a job in it's own.