For me the interesting part of this article was the author discovering that he barely recognised his old self. I wonder how common this is? When I reflect on myself, I have a notion that there's a kind of continuity to my ego over the years that - despite the changes in the intervening years - I would recognise. But I'm not a diary writer nor do I have a stack of old disks from a distant part of my personal history, so I can't confirm either way.
Has anybody else experienced what this author describes?