Feeling pressured to the breaking point happens daily to some people maybe you and this situation can go on for months.
But many people suffer through this situation not knowing what to do, if anything.
This situation is a lot like chess, the Pawn is the simplest to compare, it only confronts the problem to its immediate front, left or right it does not look backwards.
This is one option you could use; you only deal with what's in front of you, don't worry about what's already done.
The Knight on the other hand jumps ahead a few steps and try's to gain advantage by staying a few steps ahead.
Maybe you could try to think a few steps ahead and make plans to deal with your issue that way.
Ask yourself what is likely to happen tomorrow and the day after and begin making plans.
The Bishop is always trying to cut corners; there is a time to use this strategy.
If you cut a few corners what could that do to help you in your situation? I'm not advocating lowering the quality of your work, but what if you tried to reduce the amount of volunteering you do.
Maybe you need to start saying NO more often.
The Rook is a hard hitter he comes straight at you from the front or side.
Be aggressive and get prepared to take ground when you use this strategy.
Become a leaders best right hand person, make yourself invaluable.
The Queen is the lady with finesse, she fights with NO Rules.
She will come at you from every direction; she will use every trick in the book to win.
With this strategy you would take on a leadership position and seek to engage all challenges and set records.
And lastly the King, is the smartest strategy in the book; he lets everyone else fight for him.
This is the best strategy to use, in order to begin to apply it you must first make friends, lots of friends become invaluable to them and you will be defended until the end.
These strategies can be very useful but are best when used together in an overall plan to deal with damaging challenges and changes in your career.
Let me know if I can help, Good luck.