system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] What is "life" as a force ghost like?
gpt
A Force Ghost is like a droplet bouncing back up out of a lake.  It takes a lifetime - or a significant portion of one (or, y'know, being The Chosen One) to retain one's individuality *at all* after death, because your personality is just this microscopic blip in the Force as a whole that you return to upon physical death.

So what is it like?  It's like momentarily coalescing around a shatterpoint.  Obi-Wan wasn't watching Luke take a dump on Hoth, and neither was Yoda watching him jerk off to his own sister in his downtime on Endor.  They didn't give a shit because it wasn't important.  Rather, they as Force Ghosts would only "coalesce" - which is to say differentiate themselves from the Cosmic Force - long enough to guide him through the most extreme, galaxy-affecting circumstances.  Once those moments had passed - to one end or another - they'd reunify with the larger lifeforce of the Universe itself, until another shatterpoint emerged.

And it seemed to get harder over time - or at least Obi-Wan and Yoda seemed to give less of a fuck as time went on.  Yoda only ever appeared to Luke once - and that was only after he'd won.  Obi-Wan appeared or was heard a few times after Endor by Luke, but pretty much after the Ssi'Ruvi Imperium was knocked out he joined the Cosmic Force permanently.

They are an echo of a personality, something that will inevitably fade with time, but can be amplified momentarily by the most extreme circumstances.  They are the entire Universal Force momentarily rendered discrete and the personality of the Jedi who learned to channel that ultimate power.

In short, there is no "life" to that existence.  It's just a momentary apparition before they rejoin something far larger than we could possibly imagine.

Followup: it may also be notable that the Force Itself seemed to have realized the cosmic necessity of such a seemingly aberrant occurrence round about -20-0 BBY.  The very idea of persisting as a discrete entity post-death was considered absolutely impossibly by the Jedi Order - even by Yoda who'd had 800+ years to have seen such a thing.  Neither in the time or Revan, nor Surik, nor any time other than the Galactic Civil War had Force Ghosts ever seemed to have been a thing outside of incredibly localized darkside ghosts haunting the tombs of their deceased corpses.  There was no universality to that, only individual will.

But all of a sudden - literally on the eve of the almost-total extermination of the entire Jedi Order and the ascendency of the Sith - the Force Itself divulges the secret to training a new generation of Jedi even beyond death.  Convenient, no?