How you reconstruct your past is a property of how you think now. Some people might be accumulating a lot of memories. I keep rethinking independently of my past what makes sense all the time and find it normal. I have slow access to reconstructing memories of my past and do it through slow thinking with more of my attention on what's going on now and find it normal. So by my standards, I'm performing at 100% and those who are relying on how they were doing things earlier and going on a torturous chase to get past environments back after they lose them are underperforming. Another person who is relying more and more attached to their memories might see me as losing awareness at the same rate as I'm gaining it and never getting very far and gaining much and being in a lower place than them.
Theoretically, things could be thought of another way but I don't really have a feel for it. If everyone all the time during their own existence defined themself to be a future of another person who died before they were born, they would think of it as "My mind is truly on the environment I'm presented with now and not on how it went in that earlier individual. I don't see why how it went is anything I need to know. It makes sense." Then they would be focusing on what they already did of having become themself and seeing that it's not so bad. Then they would feel like it makes sense that they keep dying and being replaced by separate individuals later all the time. However, since most people don't think that way, it would keep problems gone to keep surviving as an individual rather than die and having a new individual created to take their place who then looks at what they haven't done yet and prone to a lot of depression while they're young, and at how they're going to be dead as an individual.
I think of it as what's the true natural sensical way to look back at earlier by my standards. With my current way of thinking that I have no idea whether would change a whole lot after a long time, I wouldn't be impatiently waiting for anything so much later. Rather, I would look at now and think of it as once it is the so much later time, I might focus on what's going on right then my own way and enjoy it. So with my current way of doing things, if I was 1,000 years old, I would think of my distant past self as the thing gotten by taking my present self then applying the operation of taking one's decade ago past self nearly 100 times. Even a decade ago is very buried in the sand. But I would construct what happened about 10 years earlier. Then I would see that one of the things I did was remember by then 10 year ago past self. I feel like broken telephone is how my 1000 year ago past self is supposed to be looked at. Maybe in a more slow advanced way, I could construct 100 years ago and feel like that's how it's supposed to be looked at once it's that long ago. I may have done the same thing 100 years ago for 100 years earlier. However, I no longer feel the need for all the details of how I did it at the time that I felt the need for at the time. It's sort of like what ever I knew one century, I'm satisfied with the awareness of each thing I did that century being extracted some time in the next century being cut in half the next century. It wouldn't be quite like this but more like "Something like that is definitely going to be the way of looking back that keeps coming very naturally right then through separate independent on the spot advanced constructions my own way right then." So I could construct the previous century and remember that some of the things I did were construct my then previous century.
I'm certainly prepared to keep living on and on a really long time. My really good ability to adapt to what ever the environment is if it comes means that if I were to live to a very old age, I would still have a wandering mind instead of having standards that are so high that they're impossible and therefore be able to adapt to the environment on the spot really well, provided my brain actually is naturally headed the way it seems. Also, in one sense, it's like my decade ago past elf is not real so sometimes I look at things from a decade earlier and then see it as a new present experience rather than as having rushed into now from then using relativistic time dilation, and so it ends up okay. I think I could also do something like that at the age of 1000 with no problem with my current mind set. You might be thinking it's like being a separate individual every 10 years each of whom is accepting that they're going to be dead in 10 years and be unable to imagine how somebody else could come to terms with it. I don't really think of it that way. If my mind is wandering, I could sometimes keep making up what ever I feel like about how my past went with no problem and be like I don't have to get it right. Then through the slow advanced construction by broken telephone recognizing the technicality of what it really means to say how it went and thinking of that as being the correct way to accept as proof how it really went, an automatic attention snagger of stuff from 100 years ago, my brain might be like "I don't accept it as proof of how my really distant past went" and thus consider it a new present experience because the attention snagging strategy for remembering it is not the slow advanced construction strategy. When my mind is wondering, I might also be like "How it really went is nothing I need to know" and also be fine with feeling like I rushed to now from 1000 years ago using relativistic time dilation to feel like 10 years.