Buzzwords
Comfort zone = behavioral state within which a person operates in an anxiety-neutral condition, using a limited set of behaviors to deliver a steady level of performance, usually without a sense of risk.
Quotes
When you travel, remember that a foreign country is not designed to make you comfortable. It is designed to make its own people comfortable.
– Clifton Fadiman
We shall have no better conditions in the future if we are satisfied with all those which we have at present.
– Thomas Edison
A comfort zone is a beautiful place…but nothing ever grows there.
Elsewhere on the Web
Comfort Zone Calculator
Wikipedia
Comfort zone
Planeta.com