You would be immortal and all basic amenities essential for physical survival would be provided. You can have the age of your body according to your choosing and your mind won’t blow off by accomodating endless amount of memory.
You can choose anything you desire and that too at any instant which may or may not exist in real life, like an endless supply of something or a companion with the same immortality powers as yours, but you won’t be able to change it in the future and there would be no going back. Also you cannot alter your mind in any way that would enable to let you tolerate living for eternity or not get bored of things.
Ideally you would want to have everything just to be sure but by asking you the minimum requirements, it would making it more interesting to know what you think you could do without or what matters to you the most.
For me, it would essentially need to be a TARDIS.
Whenever I think of immortality I immediately go to the end of all other life and the idea of knowing that I would eventually be doomed to an inescapable existence of total isolation. Long before that, but hundreds of years from now, I am sure that I would go literally insane with boredom. I need to know that there will always be something new, different, and interesting. A TARDIS would allow me to go anywhere, anytime, with anyone.
I also fear eternal life in some preeminent imprisonment, either some form of external confinement, like being trapped at the bottom of the ocean by the crushing weight of the water around me, some form of locked-in syndrome. A TARDIS could operate on its own to save me from such a fate.
If eternity ever becomes too much, a TARDIS would also give some options to potentially end my existence.
That’s a great idea! I second it!