BSD
YC: it should be noted that seemingly according to the gemara above, your post only applies if said person has an urge to say LH.
i understand, given your name, that you probably did not read that gemara, so i will try to provide an explanation.
the gemara brings down a brissa (a tannaic saying, from the same time as the mishna) that says that if one “sits and doesn’t do an averia, we give him scar as if he did a mitzva”. the gemara then clarifies that the brissa only applies where “an averia came to his hand, and he was saved from it”
rashi: this “sitting and not doing an averia, we give him scar as if he did a mitzva” that we said, is when (an averia) came to his hand, and he denied his YH, and he didnt do the averia. there is no mitzva greater than this.