If you had to set one metric to use as a leading indicator for yourself as a knowledge worker, the best I know might be the number of Evergreen notes written per day. Note-writing can be a virtuosic skill, but Most people use notes as a bucket for storage or scratch thoughts and Note-writing practices are generally ineffective.
A caveat: “Better note-taking” misses the point; what matters is “better thinking”
Ahrens, S. (2017). How to Take Smart Notes: One Simple Technique to Boost Writing, Learning and Thinking – for Students, Academics and Nonfiction Book Writers.
If writing is the medium of research and studying nothing else than research, then there is no reason not to work as if nothing else counts than writing.
Focusing on writing as if nothing else counts does not necessarily mean you should do everything else less well, but it certainly makes you do everything else differently. Having a clear, tangible purpose when you attend a lecture, discussion or seminar will make you more engaged and sharpen your focus.
Even if you decide never to write a single line of a manuscript, you will improve your reading, thinking and other intellectual skills just by doing everything as if nothing counts other than writing.