^ I agree. You can minimize your presence by not using social media, paying cash, etc. But at the end of the day, there's only so much you can do. Like I said, you make yourself a less easy target than someone else. You don't outrun the bear, you outrun the guy who is also running from the bear. You can't burglar-proof your house, you just make it less penetrable and more difficult than your neighbors. Same for your car. Same for your income (unless you're always paid under the table, and have found a way to avoid income taxes--good luck!)

This might not protect you from a determined spear-phish attack, or someone with high-level access who has a vendetta against you personally. But it will make you uninteresting, undifferentiated and unappealing as a target, and will help you blend into the crowd. If someone goes looking for a target from amongst my peers at work--I'll be WAY down on the list of people to try. There's no way to go "completely off the grid" though. Not legally. IRS, selective-service, and a few other things will prevent you from doing so.

p.s.
Your ideal solution is to do all vehicle work/repairs at home, use photo-blocker covers/sprays on your license plate, limo tint the windows, uparmor the doors, and use run-flat tires. Understand that you may convince some people you're some kind of reclusive drug-lord though.