A good way to approach this question is to explain the measures you put in place to prevent an issue from spiraling into a stressful situation, for instance balancing projects effectively and keeping to a tight time schedule. Give an example of when you were faced with a difficult situation and how you kept a cool head.

The interviewer will be looking for you to demonstrate that you are able to work well under pressure and stay focused on the task in hand. Getting overwhelmed by stress can be counter-productive, especially when working in a team, so employers will look to avoid hiring candidates who crack under pressure.