Comment by iLemming
> I wouldn't say my expertise and abilities has grown exponentially
Things always look easier only after you solve a problem, don't they?
That is a known as hindsight bias (also called the "knew-it-all-along" effect). Once you've solved a problem or seen the solution, it seems obvious and you tend to overestimate how predictable or easy it was.
There's related phenomena known as the curse of knowledge - difficulty imagining not knowing something once you know it.
"The Mythical Man-Month" - discusses on why we underestimate complexity, it explains the psychology behind it.
There's also "forgetting the beginner's journey" or the "fourth stage" of learning where skills become so automatic you can't easily explain them.
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https://en.wikipedia.org/wiki/Hindsight_bias
Your psychology lesson is misplaced. I know my usage before and after, and it's a minor delta. The bulk of my Emacs usage today is using features that have been in my config since prior to my learning Elisp.
If we're going to be patronizing here: Most people who learn Elisp early into their Emacs experience are failing at identifying the source of their growing expertise, and are incorrectly attributing it to their knowledge of Elisp, when in reality they are merely becoming better Emacs users due to repetitive practice.
They also have a habit of reinventing solutions that are readily available within Emacs, or as a package.