So sorry that you're in this tough situation. I think the best thing to do right now would be to find an outlet for your anger. Are you able to ask your boss for time off or to go outside for a few minutes ?

If you're able to go someplace where you can be alone, you could scream out loud - that helps some folks lose their anger. Or punch a punching bag or something like it ... something that belongs to you, not to the office. Or go for a run - run as fast as you possibly can, get those endorphins flowing.

You need to lose the anger. No other way I see. I had the same happen to me last week at work, and I felt like I was going to explode and ram my fist through my computer screen. I went to a vacant conference room and stared at my hands for about 10 minutes straight.

I wish you well.