Okay, first off, destroy all your credit cards, shopper loyalty cards, library cards, driver license, etc. Disconnect your telephone, and throw your cellphone away. Best bet is to douse your entire home in a chemical accelerant and set it ablaze to hopefully destroy 99.95% of your DNA residue. Next, you should stowaway about a freighter headed across the Pacific. When reasonably close and when no one is looking, dive overboard and swim toward an atoll. As researching uninhabited islands will leave too many bread crumbs, you're going to have to take the luck of the draw on which one though, be it inhabited, irradiated from nuclear bomb tests, has edible flora or fauna, or be it a research or military base of sorts.

If you succeed and survive the journey and you are able to find a way to locate, trap, and prepare food to eat along with many other necessities of life, then you will have regained some privacy. However it may be fleeting as any fires, shelters or other evidence of your presence may be spotted by sea or by air at any time. And even in the best case scenario, you'd lose all contact with family and friends, the internet, electricity, indoor plumbing, and news of the world outside of your new home.

Otherwise, expect nearly everything you do in the modern world, even things as mundane as flipping a light switch will be compiled into individual databases, and in turn, aggregated in a massive psychographic profile allowing certain government and private entities far more insight into your daily routine and habits than you are likely aware of possessing yourself.