['I have a huge meeting coming up soon at work.', 'What is it about?', "it is for a major project that I am leading.  I am fairly well prepared, but I just don't know for sure how it is going to go."]
Sounds like you will likely do well.  Do you expect any problems with other people?
I have a big meeting coming up soon, and even though I am pretty well prepared, I can't help feeling like this is a big risk.