The comfort zone part needs to realize that the comfort zone is not safe, and that sensations that are labeled fear can just as easily be labeled excitement as you find the growing edge of your comfort zone and move beyond it. (remonline.com)
The ability to grasp the notion of the paradox and to intend to be comfortable at the edge of your comfort zone. (thematrona.com)
«We've been at the edge of the comfort zone on this one,» he says. (newscientist.com)