Give the hiring manager the impression that you can maintain your composure when faced with tight deadlines. If handling stressful situations is not one of your strong suits, describe how you have worked to handle this better. Include an example of how you handled it as an office assistant.

"When I first started as an office assistant, I realized I didn't handle stressful situations well. My manager wanted a quick turnaround regarding an inter-department memo, and I did not take the extra few minutes to re-read it. After that experience, I made improvements to handle tight deadlines more effectively. I use calming techniques when I feel that I am tensing up. If the task involves a document that I need to type, I'll re-read it (usually out loud) to make sure it sounds correct."