If you want my help, it is not by accepting one principle of action and rejecting another that you can have it, but by concentrating before the class, by establishing silence and peace in your heart (and in your head too, if possible) and by calling my presence with a sincere aspiration that I should be behind all your actions, not in the way you think that I would act (for that can only be an arbitrary opinion and therefore necessarily wrong), but in silence and calm and inner spontaneity. This is the only true way of getting out of your difficulty.
And until you are able to achieve this, do your best quietly and perseveringly, according to your own capacities and the circumstances, with simplicity and without tormenting yourself.
The Grace is always there with anyone who wishes to do well.
Ref: On Education