If you expect events to disrupt the economy, financial system, food supply, and for government to fall apart, with no solution for several years at a minimum, and perhaps several generations or more at maximum, then your prepper strategy has to include permanent plans for self-reliance. A major nuclear war or supervolcano eruption could cause this type of SHTF Emergency.
This scenario is where living standards regress to the pre-industrial era. Some technical devices may help you for a while, but repairing them won’t be easy, so you better be able to do without all computers, phones, radios, and engines. This is truly the pessimistic SHTF scenario. And, it gets worse. You will need to plan for self-defense, as hungry masses will steal your sheep and vegetables from your land if they know you have them.
Team Up For Survival
You will likely need to join a small family or tribe for mutual protection, help taking shifts on lookout duty, and because survival is optimized in a small group of dedicated & conscientious team players with diverse skill sets. A water source will be essential, either from open water, or a shallow water table that you can access with a hand pump (about 20-30’ max), should electric not be available to run a standard submersible well pump or in case your pump goes bad and replacements are not available. These are but a sample of the possibilities to prepare for in a long duration SHTF event.
However, if you expect that most emergency SHTF situations will require only a short respite from society, such as a few months or a few years, then you can adopt a completely different prepper strategy. The COVID 19 / Coronavirus scare of 2020 falls into this category. You probably do not need to worry as much about raising animals, hunting, or growing crops, because you can easily store enough food to last that long. Fresh food is nice, but not essential.
Technology Is Not Dependable
You also can perhaps rely more on technology in some scenarios. For example, should the power grid go down, you may be able to buy fuel and run your generator. Or if the economy still functions to some degree, then you may be able to buy replacement parts for some vehicles & gadgets. The money system is less likely to collapse in most short term situations, so you may find that you don’t lose your regular home in the city. Your bank may still function well enough to allow you to buy online, pay bills, and protect savings, making a move to gold & silver unnecessary.