Being an opener is all about warming up the audience for the main band. That is always fun, pretty easy; there isn't a lot of pressure.
Archery, fencing, spear fighting, all of the martial arts, tea ceremony, flower arranging. . . in all of these, correct breathing, correct balance, and correct stillness help to remake the individual. The basic aim is always the same: by tirelessly practicing a given skill, the student finally sheds the ego with its fears, worldly ambitions, and reliance on objective scrutiny - sheds it so completely that he becomes the instrument of a deeper power, from which mastery falls instinctively, without further effort on his part, like a ripe fruit.