I have actually used that technique of watching myself perform a task when trying to improve my workflow for other things, like learning to draw and paint.
I never applied it to programming before but in hindsight it's really obvious, because it's incredibly effective. I use a tool [0] to record a timelapse of the desktop, because after a while watching the recordings in real time slows me down more than it helps. I find that usually when I focus on the task at hand I tend to lose track of time and of what I'm doing and when I get stuck I end up wasting a ton of time doing trial & error instead of taking a break to think things through properly, or switching to something else. This kind of stuff really adds up in the long term.
I never applied it to programming before but in hindsight it's really obvious, because it's incredibly effective. I use a tool [0] to record a timelapse of the desktop, because after a while watching the recordings in real time slows me down more than it helps. I find that usually when I focus on the task at hand I tend to lose track of time and of what I'm doing and when I get stuck I end up wasting a ton of time doing trial & error instead of taking a break to think things through properly, or switching to something else. This kind of stuff really adds up in the long term.
[0] https://www.lomakescomics.com/cafe/