Whether you've been in the system for a couple of years or for an entire career, it's possible that your intimate relationship with "the system" may color your perspective, leading you to become the ever-dreaded JADED.
You may have emphatically declared that this would never be you and that you could never turn against your vital role to the humanitarian world. Despite your loyalty to your work, however, finding yourself questioning the system and your role in it is actually very common.
Pay close attention to the indications that your body, emotions, and/or behavioral responses may be giving you, letting you know that you're stressed/distressed.
You may find that your behavior also changes - that you do things that you normally wouldn't do or that you react to situations in ways that you wouldn't have responded previously. You may even feel out of control of your behavior or your reactions.
Remember that you are not alone, and do yourself a favor: Don't sign up for overtime in order to forget your frustrations, don't sneak into the liquor cabinet strategically positioned behind your boss' desk to down that fine, imported bottle of whiskey he's been salivating over, and don't expend your energy demeaning the new intern in your office or bellowing obnoxious orders to your domestic helper. Take care of yourself! Take a damn break!