Never been more nervous...

I applied for a job at my dream company and was one of two selected for a second round interview. They'll let me know the outcome tomorrow or Monday. The only times I've ever been this nervous was when I was waiting for my uni placement and high school results. It's 4.49am and I've only had half an hour of sleep. I don't think I will sleep tonight. I hope to God they ring me tomorrow. I don't want to spend the weekend in anguish.