Many people have tried an experiment of turning off their breaker in their home (don't do it in winter or your pipes will freeze and crack) and just going a week without any sort of electricity.
After a week of being unplugged, did your family survive? How are the kids taking it? Did mom and dad fight over the stress? This may give you a good clue to how your family may react when flipping the switch. Good, so you made it one week. Take a breather and then try two weeks. How'd it go?
That in itself is very good advice. Test before you make the leap!
If you do so, watch your blood pressure. Even if you think you're calm, your blood pressure will tell the real story. So long as you test-try in the city, you should be able to find those free blood-pressure machines. At least one chain drugstore will have a public machine.