Out of the comfort zone it means to improve themselves
Comfort zone will be felt precisely when there is a chance of improvement. Suppose you want to increase your income. Once you learn, it turns out that to improve earnings, you have to do a variety of things more, harder, and more at risk.
Both realized and in the unconscious mind, munculah reluctance to do it all and memlih what could've been and you normally do. Finally your income kept rising.
This is one picture or illustration of the dangers of a comfort zone. There are even more danger from it. We should be aware that competition and changes continue to happen. If we are not trying to improve themselves, then we will be left behind and marginalized. Not only does win, thus even "disqualified" because you're not worthy of being in an arena fight.
So, if you want to improve themselves, the first step is to want to get out of the comfort zone!