I deliberately practice a lot of things that I'm not obsessed with, it's really useful when I'm overwhelmed with a new field (e.g. learning a new framework), to isolate a small bit I want to master and try several different ways of doing it, and document my findings.
That allows me to not see what I'm trying to learn as an obstacle to what I'm trying to achieve. It removes a lot of frustration, since that shifts my view of the task from being an obstacle to being the goal itself.
I'm not sure I would say that I focus on deliberately practicing the same few skills as often as the author of the article does, though. Usually, even for the few skills that I have deliberately practiced for a long time, my focus has been on exploring variations or adaptation to new context. That is because I aim for adaptability rather than having muscle memory of a skill.
That allows me to not see what I'm trying to learn as an obstacle to what I'm trying to achieve. It removes a lot of frustration, since that shifts my view of the task from being an obstacle to being the goal itself.
I'm not sure I would say that I focus on deliberately practicing the same few skills as often as the author of the article does, though. Usually, even for the few skills that I have deliberately practiced for a long time, my focus has been on exploring variations or adaptation to new context. That is because I aim for adaptability rather than having muscle memory of a skill.