Create an emergency preparedness plan.
There are all kinds of emergencies, like when the civilization is standing most of your worries are financial. This is why you need several sources of income and highly diversified. But when shit hits the fan, the best plan is to run somewhere it hasn’t and make your life there. But in case you cannot, you need to be armed, and have food that you can store without fridge. You can only hope whatever situation you are in will pass because then it is back to the dark ages. Can you farm? Can you hunt?
Insomniac Resurrected 