Beautifully written expression of one of those deeper Truths that can be hard to accept but can be so rewarding when we do: Change is the only constant.
Your rumination also reminds me of something an old addict told me when I was in treatment in my mid 20s, which was that it’s a mistake to think one can run somewhere else and not take on the responsibility of one’s inner growth, because “no matter where you go, there you are.”
So yes, absolutely our environment plays a role in shaping us, but sometimes it stops serving usefully other than to tell us that it’s time to part ways, until we meet again.