The journey began by purchasing property in a rural area, where it seems to be easier to do many of the "self-sufficient" types of things.
Raise chickens for eggs and meat.
Produce your own chicks by breeding from your own flock.
Hunt and process the meat (e.g., venison) yourself.
Cut your own firewood and use a wood-burning stove or furnace for heat.
Grow some of your own food.
Plant an orchard and fruit-bearing bushes (e.g., blueberries).
Learn to process (can, freeze) fruits, vegetables, soups, etc.
Learn to bake your own bread and bread products.
Learn to make your own medicinal salves using plants from your garden.
Mend your own clothing.
Pay off all your debts (including house and car) as soon as possible.
Collect rainwater for the garden and livestock.
Use animal waste for fertilizer.
Make your own cleaning supplies.
Purchase things from flea markets or yard sales instead of retail stores.
Sell things you grow, raise or make.
Avoid the temptation to have the most and latest gadgets and technology (phones, computers, games, etc). A flip-phone is sufficient.
Buy a good, used car rather than a new one. Keep it maintained, and use it until it's not economical to repair it any longer.
Set aside part of your paycheck every week to pay off debt, save for emergencies, or save for long-term goals/expenses (retirement, car, home/property).
Track your expenses, distinguish "wants" from "needs", and cut out some of the things in the "wants" category (e.g., frequent trips to restaurants or the coffee shop, expensive cell phone plans, expensive television packages). Replace them with free or low-cost activities (hiking, reading, talking with friends, gardening, baking, etc.).