It sounds like great advice, I just wish I had some properly hard things I needed to apply it to, rather than the multitude of what ought to be simple things of which a few unexpectedly and inexplicably turn out to be grossly disproportionately difficult to do for no very good reason.
I have also experienced this phenomenon. Why do you suppose we come to these surprises, and why do you suppose we experience them?
Is it because we are confident? Or because we lack sedulity? Or because our analysis was incomplete?
Is the surprise time consuming because we want/expect it to be easy? Or because we are focused on a different problem really. Or because our focus was interrupted.
