You want to become as self-sufficient as possible. You want your own success and survival in life to be a function of your own agency - not controlled by a bunch of opaque institutions whose success has nothing to do with you.
Learn to grow food, cook well, repair your own home/vehicles, etc.
Physical commodities are also very valuable when the economy is in a downturn IMO - 500k worth of stocks is nifty and all, but you can actually _live_ and _survive_ in a 500k home, for instance.
