1) Don't live in places vulnerable to bad weather and natural disasters. No hurricane zones, earthquake zones, or anyplace where fires large enough to engulf entire counties occur on a regular basis.
2) Have at least two ways out in an emergency and someplace to go.
3) Stay outside of the big cities.
4) Stockpile food, water, and ammunition.
5) Stockpile more food, more water, and more ammunition.
6) Generator. With plenty of gas.
7) Water filtration and purification equipment, fire starting equipment, and disinfectants are necessary.
8) Communications gear. Cell phone, CB/Ham radio, walkie-talkies, police scanner, satellite tv, whatever. Stay informed.
9) More food, more water, more ammunition.
10) Build to last. Solid foundation on high, solid ground; fire-resistant construction; built to be defensible in an emergency.