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.


You cannot change it so much that you alter the future. Doesn’t mean that you can’t live a fulfilling life or run things from the shadows.
But the catch is I dont know what will change time a lot or a little. If I get in an elevator and shit my pants in front of Utada Hikaru does she never write Simple & Clean? I simply cannot know, so with those rules I have to isolate.
She would certainty nor say that simple and clean is the way you are making her feel.
Why not operate under the assumption that your future self has already gotten away with everything? Taking advantage of the bootstrap paradox. Like Bill & Ted, everything around the dad’s keys. Might at least be fun, that way.