I’ll share what I have done.

I follow a rule of 3. 3 sources for sustaining resources.

water:

1. I keep at least a months worth of bottled water for my family. I routinely cycle through it to ensure it’s always new.
2. water treatment to consume harvested water from local ponds. I have a 50 gallon drum used to store water for my garden that would be used to store non-potable water for filtering and treatment. using the water bottles from 1 would be used to store potable water.
3. water filters like life straws. if we have to bugout or are desperate, these filters are the last ditch effort to get enough water.

food:

1. currently have three months of canned food that we cycle through and replace when needed. fruits, veg, even meat. longer term stored foods with 15-40 year shelf life are also kept
2. currently have a 1600 sqft garden that we manage. we eat from it year round and preserve what we can. pickling, canning, freezing, drying.
3. I have the tools and experience for hunting. I live outside of town so traveling for hunting isn’t unreasonable.

electricity:

1. grid power, I live near some emergency services so my power is always the last to go out.
2. I have a generator that can power my whole house (tested). it runs on LP, NG, and regular fuel. I keep three LP tanks around just in case but it’s setup for a direct line to my NG line. I run it once a year just to make sure it’s still in working order.
3. solar panels / battery for small items like phones, laptop/tablets, radios, and lights.

protection:

1. I have several guns. some for hunting, some for defense. last I checked I’ve got around 10k rounds of ammo that should last me awhile.
2. I have several bows, hunting mostly but could be used in a pinch. also slingshots for small game and deterrent.
3. I used to collect knives and swords. dozens of knives, sharp as the day they were sold. a couple full tang swords that could at least scare someone away.
4. bonus - your mind is the most dangerous weapon you have. read things you’re told not to. experiment with things you’re told not to. gain knowledge and experience you’re not supposed to have. be the danger, but don’t be an idiot.

things I’ve learned:

• establish your garden now. if you wait until then, you’re going to gamble with your life. an established garden produces. a new garden grows.
• have a gameplan of when you need to abandon everything. think it through, step by step, day by day. everything you have accumulated is not worth your life.
• create marketable skills. carpentry, agriculture, engineering, medical, etc. if you have a skill you can trade with it.

these are just some ideas. make a plan that works for you.