One breaks [his] priesthood covenant by transgressing commandments – but also by leaving undone his duties. Accordingly, to break this covenant one needs only to do nothing.
In civilized life domestic hatred usually expresses itself by saying things which would appear quite harmless on paper (the words are not offensive) but in such a voice, or at such a moment, that they are not far short of a blow in the face.
...Your patient must demand that all his own utterances are to be taken at their face value and judged simply on the actual words, while at the same time judging all his mother’s utterances with the fullest and most oversensitive interpretation of the tone and the context and the suspected intention… once this habit is well-established you have the delightful situation of a human saying things with the express purpose of offending and yet having a grievance when offense is taken.