\- I realize I will never "know everything",
\- I realize I often go back to basics,
\- I realize that there are some basics that I missed earlier,
\- I realize that there are some basics already met, but simply forgot.
\- I realize that some "best practices" were actually bad ones,
\- I realize that even after all these years, a feature takes always more time to finish than I thought it would.
This is probably not completely true since I feel better on certain areas (keyboard mastering, search for help, isolate problems, testing...), mostly because I made tons of mistakes before.
I still enjoy the journey as a Rails developer, because I have the feeling I can "deliver added value" faster than any other tool, which is a great satisfaction.
But I will probably never be "an expert" after all these years, which is okay. Health first.