Your comfort zone is a place where you keep yourself in a self-illusion and nothing can grow there but your potentiality can grow only when you can think and grow out of that zone.
What would have become of Hercules do you think if there had been no lion, hydra, stag or boar - and no savage criminals to rid the world of? What would he have done in the absence of such challenges? Obviously he would have just rolled over in bed and gone back to sleep. So by snoring his life away in luxury and comfort he never would have developed into the mighty Hercules. And even if he had, what good would it have done him? What would have been the use of those arms, that physique, and that noble soul, without crises or conditions to stir into him action?
There are only two most powerful situations- being so small that you have nothing to lose and being so big that you don't care what you lose!
The development of man's intellectual capacities has far outstripped the development of his emotions. Man's brain lives in the twentieth century; the heart of most men lives still in the Stone Age. The majority of men have not yet acquired the maturity to be independent, to be rational, to be objective. They need myths and idols to endure the fact that man is all by himself, that there is no authority which gives meaning to life except man himself.
Y, entonces, en ese instante que tan solo dura un segundo, el cerebro se encarga de abrir la cerradura del cofre en el cual guardas todo lo que aprecias. Cede de tal manera que la tapa se abre y todo lo que hay en el interior sale de forma tan rápida y tan fugaz que no puedes detenerlo.