How are you when you're working under pressure?

I really like to work under pressure cause of that I can discover my abilities and how I'm hard worker,

but in other side you have to recognize which kind of pressure you have

example: in my present work I have a lot of pressure with my customers and our showroom staff, so I can handle and manage with them,

but if my manager put me under pressure to finish some job I'll keep the priority for the most important subjects that he ask about.