I have a garden (big enough I can stuff), keep bees (and sell honey), grow shiitake and lions mane, make our alcohol (fruit wines, mostly from stuff I grow), make our own soap, and other hobbies that save or make some money. Of course I do the usual stuff like Netflix instead of cable, use a budget cell carrier, etc.

It helps, but the big influence is one's spouse. My spouse spends most of her money on horse stuff. I'm left to pay the bills and basically support us on a single income. She does not share my dream of retiring early.