One reason I’m increasingly interested in mediocrity as an ethos is that I sense this creeping, paralyzing perfectionism starting to infuse stuff I do. Mediocrity is movement. It is staying in the high reps/volume middle zone rather than wandering into 1RM zone.
There's a relationship, but not quite kaizen. Kaizen tends to lead to lean six sigma excellence orientation at the macro level. It's kaizen+playfulness in open environment = mediocrity orientation (fat+lean)