long boring week at work

i had one of those weeks where everything just drags on and on. i started off monday feeling pretty good but by friday i was ready to crawl into a hole somewhere. my coworker sarah is always so chipper and organized, like she gets stuff done while everyone else is still figuring out what they need to do for the day. this week we had this big project deadline coming up and everyone in our team was feeling the pressure but i think only sarah knew exactly what we needed to do each day. i tried to keep up, really did, but it just felt like no matter how hard i worked or how early i got there or late i stayed, nothing seemed to be getting done right. and this whole week my boss has been giving us these little pep talks about the importance of the project and our roles in making it a success, which is great except that it's really just driving me crazy because even when sarah does all this work, she still seems calm and collected. i'm worried people are starting to notice how i'm struggling, like they can see through my act or something. today at lunch i overheard jason from accounting say he'd heard that we were way behind schedule and if it didn't get done soon the company would be in trouble, which is not exactly a rumor mill myth at this point. but then sarah was walking by with her usual smile and i felt like screaming right there in the hallway about how unfair everything is, you know? i probably should have gone to my boss to ask for help or to clarify expectations but instead i just kept it all inside and now here we are friday afternoon and im feeling really guilty that i dont seem able to contribute more. i dont want to let my team down, but honestly i'm not sure how much longer i can keep up with everything.