Turning into a real complainer

I'm ready to quit. Not sure why I havent yet. Working nights is insane. It's not natural. Plus I still feel like a total fucking idiot and shitty nurse. I'm slow, I'm bumbling, I don't know where to find the right answers to my questions. My IV skills seem to be getting worse. I had a good catch the other night: An older patient in for a sorethroat and fever (like 103) was going to get discharged. I go to get him ready and he's pretty darn sweaty. I let the doc know, he's all "no biggie". I go back, guys like even more sweaty, I ask the doc to come look at him at least before he goes. Guy stands up and has some stridor, and is like dripping sweat. Docs decide to do a CT before he goes- low and behold he winds up having epiglottitis! One way ticket to the ICU. But so far that feels like just about the only thing I can be proud of. Every other moment I feel stupid and substandard and stressed and like I want to just go home and cry. So...yay! Off to another shift.