What is Comfort zone?

A comfort zone is a psychological state in which things feel familiar to a person and they are at ease and in control of their environment, experiencing low levels of anxiety and stress. In this zone, a steady level of performance is possible.

Bardwick defines the term as "a behavioral state where a person operates in an anxiety-neutral position." Brené Brown describes it as "Where our uncertainty, scarcity and vulnerability are minimized—where we believe we'll have access to enough love, food, talent, time, admiration. Where we feel we have some control."