If my younger self from like 3 years ago heard generating videos can be a prompt away and can make gigantic amounts of misinformation, he would shit himself and probably write a manifesto, but fuck me this is still insane today!
I can't tell whether 3 years ago you were pre-potty training but fully literate, or whether you've simultaneously learned better emotional regulation and sphincter control in the past few years.
People tend to change more, psychologically speaking, between 18-25. They might have been 17-18 three years ago. Makes sense with the manifesto comment.