I recently read this awe-inspiring article about the importance of "
effortful study", leading to my conclusion that daily effortful study past our comfort zones, which comes primarily from strong motivation, is key to developing a "reasonable level of skill".
So important is "effortful study", in a sustained and measurable way, to improve rapidly that makes the process of journalling and goal-setting so effective - ideally directed by the guiding decision of a strong purpose.
Polarity works for me.