Somewhere behind you is a person, a few years younger, who would be quietly amazed by an ordinary part of today. The flat. The job title. The person in the next room. The fact that you can drive.
Nothing feels like arrival from the inside, because the mind resets its baseline within about a fortnight of getting anything at all. Which makes it worth pausing on one of those things deliberately — not to be grateful on command, but to check the record. That earlier version was not wrong about how much it would matter. You simply stopped being able to see it.