I got 2 hours of sleep

I’m in disbelief, I’m sad, I’m furious. 300 hours of study, all for this. I felt pretty good about the exam yesterday. I went to bed early and gave myself a 9.5hr window to sleep. I had one of the worst nights of my life. I could not sleep for the life of me, and I think I got two short 1hr sleeps in. I feel like I have sabotaged myself and my performance on the exam will suffer greatly. All I keep thinking is how could this happen?

Edit: I appreciate all the inspiring words, thank you all

Update - just finished the exam, feeling decent about it. Pounded coffee, had some leftover pizza for breakfast, and made a friend at the test centre.

To any other L1 candidates - if you only get 2hrs of sleep, fuck it, you’ll crush it anyway. Cheers

Edit 2: I passed.. who needs sleep