Professor Moody also lent that advice to Harry for the Horntail.
I disagree in part (unsolicited opinion forthcoming) with "when in doubt, throw it out". It's dancing, not dairy-based perishable product.
If there's something in a routine that doesn't feel right, do it until it *does*. The block is mostly cerebral anyways. I know, easier said than done- my own blocks form a nifty transparent house: Cuban motion, pivots, running right turn, etc.
If having a coach that cares enough about your dancing to motivate you to break down barriers between your mind and body and dance makes them an idiot, then give me a nuthouse. But then... neither myself, my partner, nor my coaches allow ourselves to become so entrenched in routine and pattern that we can't think outside the box to dance circles around those who are so co-dependent figurally speaking.
If one was to throw out everything that would "always give them problems"... perhaps they should take on a sport more like, I dunno... paint-by-number? In a monastery?