I was so scared this semester too. I did the program in fall 2008 and there was no WBI and I was terrified I might fail!
Give definitive answers. Don't just say like "Neutral..." say "strongly agree" and "strongly disagree." Basically answer the questions based on the perfect scenario. like if it says "I think I work harder than the average person" say "strongly agree". If it says "I think most people are mean" (there is some question similar to that I believe) say "Strongly disagree."
Basically ... you love worknig with people, you are an EXTREMELY hard worker, that kind of thing.
Be assertive and trust your insticts and answers!