Stipulations:
- You cannot die and are immune to disease
- You cannot alter the future such that you change the world from your point of origin. i.e. You cannot become so famous that future people recognize you as immortal.
- If you vary the timeline too much you will cease to exist.
Hide in a cave for an eternity then. If no one knows I exist, then I live forever.
Booooo! Boring!
I’d do mostly the same, however I’d go full cryptid: there’d be sighting, blurry photos, and stories told about me.