I don't think this is really about maths as such. I haven't followed the link and am only going by the OP, but I think she's sounding underqualified in the area of educational psychology - as am I, I hasten to add. The sentence "How I rewired my brain..." just sounds like click-bait. Also, as a maths teacher at school used to like saying, practice makes permanent, rather than perfect - one has to be practicing the right thing.
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@soothfast saidLies!
Of course there is only one way to learn mathematics:
Through hard work. 😉
Only through torture can one obtain such knowledge.
It's not of this world.............
As I've always said, there is education and then there is math.