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No idea. I learned it from a manager who went into a management course, was taught it and not even a week later was back in full reactive mode treating any new thing coming in as Urgent Important even when non-urgent or at least non-important, as she had been doing before going to that course.
Let’s just say she was a lousy manager.
Yeah, that stuff it’s pretty hard to learn and it’s worse when you’ve never worked in an environment where people in general tend to practice good time management - a lot of things you would normally not risk doing because they look like time wasting turn out to be the key to saving time, avoid wasted work (i.e. time wasted) and avoid problems later (which in turn, also means time when you’re the one who has to fix them), but only after you’ve seen it in action can you know for sure that such things will in overall save you time (and can actually justify spending time doing them to others because you’ve seen them actually work).
I was lucky that after 2 years working, having chosen to leave my country I ended up in The Netherlands, and the Dutch are very good at working in an efficient and organized way that properly respects work-life balance, so I learned a lot from them and watching and learning how they worked and what resulted of working that way gave me a whole new perspective into the work practices from my first job which I until then though were “the way everybody works in this area”.