They'll want to hear an example of when you put your skills to the test. Try to keep your answer relevant to the role for which you're applying, and ultimately convey a unique ability to stay cool and collected, even in the most stressful situations. Break down how you maintain a healthy work/life balance.

"I think it is important to have mastery over one's emotions to effectively get any work done. Being mature and emotionally grounded is something I pride myself on. I'm more of an observer, an active listener, and a responder rather than someone who is reactionary. So, yes, I consider myself quite capable of regulating my emotions while putting my all in."