The thing about comfort zones is, no matter how comfortable they are, we can’t camp out in them forever. When we get complacent, we want to freeze things as they are, but that’s impossible. And that, my friend, is the Illusion of Security: the idea that if you just try hard enough, you can ward off change. But change is inevitable, the lifeblood of reality, the one true constant. If we really could avoid change, then that would end the very concept of time as we know it, for time is change, and in a truly changeless universe, years and seconds have no meaning.
If you knew you would lose your job or your home tomorrow, you might panic, but the fact that you will shed them someday, should foster relief instead of fear. You are more than your job, more than your house, more than your car, more than even your body or name. If you were forever tied to a job– a cushy and well-paid job, even, but you were tied to it forever– that would be a spiritual prison, a cosmic chain around your ankle. Jobs, houses, and human bodies are nothing but individual areas in the vast game of life, and it would be a pretty lousy game if it was constrained to just one room. Even if security were possible, it would ultimately be a curse, not a blessing. Fortunately we have the gift of change.
Intellectually, it isn’t controversial when I say: nothing in your life will last forever. I’d be underestimating your intelligence if I acted like you weren’t already aware how jobs can be lost when companies go under, how airplanes can crash, homes can burn down, how you could die crossing the street, how the earth itself could be struck by a giant meteor or how the Sun itself will eventually die. You know all that, but the question is, do you know it emotionally? If you’re in the middle of a busy rush at work, if you’re sitting on the edge of your seat watching a suspenseful movie, if you’re engaged in a yelling match with your landlord, that’s when the knowledge of impermanence is most valuable. That’s the whole reason it’s good to philosophize and meditate upon the elusive nature of security, the more you think about it when you have the time to ponderously ruminate on things, the more it will be carved into your emotional knowledge, integrated into your very personality. And then when sparks are flying and you’re distracted, by rote and reflex you’ll remember the temporal nature of it all, and this will allow you to deal with things in a more enlightened, conscious way.
I’m just echoing ancient Buddhist wisdom about death and dying here, but the “take” is, the wisdom applies just as well to any transition in life, any time we’re evicted from an old comfort zone. For, when we lose a job or a loved one, that is a miniature death, the death of the self which was wrapped up in the cocoon.
Since it’s futile to try to cling to anything in the world, we may as well loosen our grip a little. The energy we exert trying to preserve the status quo in our lives, would be better invested toward a higher consciousness. This doesn’t necessarily mean you should quit your job right now, but if you reach a point where you’re no longer learning or growing from it or enjoying it, then walk. Walk, knowing it could never have lasted forever anyway. Soon you’ll look around and notice it’s actually pretty good outside your old comfort zone. Like jumping into a swimming pool, there’s a moment of shock and then the water’s warm and luxurious. Don’t get too used to the wading area though, soon it’ll be time to venture into the deep end 
FURTHER READING
10 Metaphors of Death
The Plateau Effect
Why does god let bad things happen to good people?
Length of a Human Lifetime