Use cash rather than credit. People going off-the-grid should find an employer willing to pay them "under the table" in cash without reporting earnings to the IRS.
Purchase a remote property and furnish it with what you need to be comfortable. Getting electricity without subscribing to a electric company could include using solar panels, battery power, a standby generator, propane power or wind turbines. You can get water by installing a well or rainwater harvesting system with a tank with a few refills from bulk water suppliers. For sewage, you can install a septic tank and contract with a pumping service. Learn gardening skills to grow food.
Off-the-grid people can communicate securely with prepaid cell phones and using Internet cafes. Creating a misleading trail of disinformation keeps pursuers away and requires spending lots of money to track you.