I used to teach at a university, and am currently a manager at a tech company. It's interesting how similar these areas are in the sense that they are very hard

I used to teach at a university, and am currently a manager at a tech company. It's interesting how similar these areas are in the sense that they are very hard to teach; and are currently mostly figured out from scratch from experience. The one teaching training that really worked for me was that we had a training where a more experienced peer recorded my lecture in a video, and then we watched it together. He did not give me feedback about what I was doing right or wrong, just asked me what I think about what I was seeing, and was essentially teaching me to self-observe. Perhaps there can be technologies to support this kind of self-observation on a day to day basis.