You are dropped off on Your Island in the South Pacific. It’s twenty square miles or so, so tiny in the grand scale, but plenty of room for you to wander around. There are plenty of foots, fish and wildlife for you to eat.
You don’t have to be a total survivalist. Imagine you have a nice, little cabin or hut and gun and fishing and cooking equipment. You could even have alcohol and food delivered to you if necessary.
You can have materially more or less what you want, but you must sacrifice all interaction with other people. You’ll be alone forever.