I am having some trouble at work.

Currently, we are understaffed and I am being overworked. My plate is very full, and my boss is pushing me too hard, I feel, right now.

I had to tell him yesterday that a certain project needs more time and that I won't be able to comfortably hand it in by the end of this week, or else it will be crappy work. He wasn't happy about it.

It wasn't even due this week. I was the one who initially said I could have it done by Friday. My boss didn't set a deadline for me. He was just pushing me to get it done.

So what do you do when you're being pushed too hard at work? I am at a breaking point almost.