Does not take much to be self sufficient. Been that way for 33 years. Start out small if ya don’t have the bucks. Land and good water are a must. Can live off land if you have both even in a RV and a container storage unit. Hard work and imagination is all it takes. If you can’t do it by yourself find some good honest folks who will help you. To be totally sovereign you will need a hand pump for well if loose electricity, small garden, chickens, generator and good fencing to keep critters away. Can go up from there.