Yup, at rokudan you should already be extremely self critical and harsher than your sensei. But dont tell yourself that you're trash because saying/thinking it might actually hinder your progress. Instead just pick the elements that need the most work and drill them to hell and back, training them isolated, 100-300 mindful reps per session until you get it right, then repeat some more just to be sure
Yup, at rokudan you should already be extremely self critical and harsher than your sensei. But dont tell yourself that you're trash because saying/thinking it might actually hinder your progress. Instead just pick the elements that need the most work and drill them to hell and back, training them isolated, 100-300 mindful reps per session until you get it right, then repeat some more just to be sure