Very well written, as usual.
It doesn't matter what you believe just so long as you're sincere, isn't it?
I think there is another issue at play besides purely memory and how it changes over the years with the way we codify our memories as stories. There is also the framing of the narrative.
If you ask me about my leaving the first dojo I trained at, or why I decided to return to nursing after taking a hiatus, how I came to my political beliefs, or any number of things about my life, it is easy for me to frame my reply in very different terms. Not a single one will have a falsehood, each will essentially be the truth about it. Yet by focusing on a different aspect of the contributing factors, I can relate a cogent narrative that iis completely different from the one I relate tomorrow. So different people who chat with me or interview me may end up walking away with a very different understanding of my history.