Podcaster's Suggestion of Misogi Method Interesting But Incomplete

According to podcaster Rob Dial on a recent Mindset Mentor episode of his, the Misogi Method derives from a traditional Japanese spiritual ritual involving purification by immersing oneself...for as long as possible...in very cold water.  Dial says he does this regularly, and then expanded upon the ritual to encompass anything that one doesn't think possible...like climbing a long, steep elevation or running a long distance, for example.  It's not something to be done regularly...no, maybe once a year or, as the host suggests, once a month. The point here is that doing something beyond one's perceived abilities serves as a breakthrough of possibilities and self-awareness...as well as bringing out a lot of self-imposed negative beliefs and attitudes.  I dig this idea, but Dial seems to have forgotten his repeatedly expressed philosophy of gradual, incremental change over stretches of time, even belittling it in this podcast.  Truth be told, here is where the concept of duality...combining two seemingly contradictory ideas...comes into play.  Gradually changing habits, combined with the abrupt "big feats" of Misogi, do not conflict...if anything, they should build upon one another.  Each person has a different body as well as mind with their respective life histories building unique tapestries of both skills and flaws, with widely differing physical and mental limitations.  I've had a few "Misogi's" in my life without recognizing them as such...I suppose tackling half-marathon races in sub-freezing temperature during a time of the day when I'm usually in the last stages of morning sleep is one.  But I wouldn't have done it had I not, over a span of months and years, established a daily workout routine and healthier lifestyle habits.   And you have to be careful what you select if you try this method of facing acute, demanding challenges...the point is to be able to WALK away from them with a greatly improved perspective on things...