But what if I fall? / Oh but what if you fly

Tomorrow I have my first round interview for Meta, and its for a machine learning engineer position. I’m terrified since I don’t know if I’m ready for it, as the bar is miles above just a master’s degree. I’m afraid of having the opportunity for exactly what I am dreaming of, and what if I fuck it up and fail. I’m afraid of resenting myself for not doing enough or not doing as much as I should have. But that fear won’t help me now, will it?