Yes, I know exactly what you mean. I "got serious" about a year ago and started regular dryfire, plenty of live fire, and monthly competitions. Recently I keep having these "Aha!" moments when something I read or "learned" a while ago finally falls into place and I get a deeper understanding.
This has made me consider re-reading Brian Enos's "Practical Shooting". I first read it 10 months ago and was hugely disappointed. I wanted a step-by-step recipe to shoot better, and that book wasn't it. But lately I experience things that remind me of that book, and I finally start to understand little portions of what Enos is describing.
I also find myself re-reading old threads on PF that I originally read months ago. With more perspective, I now extract more information than the first time. I feel a little stupid for not absorbing the lessons the first time around, but feeling stupid is not a unique experience for me
In fact, Gabe's vision thread is already open in another tab on my desktop, and today I plan to re-read it for the third or forth time.
This pistol stuff is way more complex than I ever guessed. And yet at the same time, so straight forward. That's probably what keeps me so interested and intrigued.