I feel the same way!
I've sacrificed so much the last three years doing pre reqs and I start NS in the fall! So much time and money has been invested and I'm so afraid to fail. My husband and children, I feel, have already sacrificed too much!
However, I worked WAY too hard to get into NS and I cannot allow myself to fail. I plan on attending any extra help sessions, open labs and learning groups as much as possible, even if I don't need it!
I think if we all committ ourselves 100% that we will do nothing but succeed!