buy stuff as if the garbage man does not exist...in 1880 they didn't have trash removal
buy one set of clothes you wear pretty much every day until they fall off of you
buy a few tools that will last you forever
no more disposable anything, remember the trash man doesn't exist
wash clothes by hand
cook everything yourself, even better grow your own food
sorry no biking, rubber is an industrial process...you walk everywhere just like great grampa did
no need to worry about fossil fuels...you won't be using them in any capacity other than maybe a nice fire in the winter in your wood burning stove which will be the only "appliance" you own (good news - they last forever!)
etc etc
this is probably what sustainable living looks like until we get star trek matter synthesizers
you'll never get a date living like this but you'll also never again worry about 98% of the crap of modern life