The real Divrei Chaim (i.e. R' Chaim of Sanz) has a beuatiful vort which I guess I should mention on divreichaim.blogspot. Rashi famously explained "Im b'chukosai taileichu" as referring to "ameilus b'Torah", toil in Torah, as a prerequisite for receiving bracha. We usually assume ameilus has a positive connotation and attests to the degree of value one places on the task of learning. Yet, says the Divrei Chaim, the opposite should be true. When one truly loves what one is doing, one does not feel a sense of toil, but of enjoyment. We find that when Ya'akov worked for Rachel the days went by swiftly "bahavaso osah", because he was enraptured by his love of Rachel. I can't tell you how many Rebbes my son has had who express the desire for the class to get a "geshmack" from learning. Can you get a "geshmack" from something you think of as "toil"?
The Divrei Chaim explains that in hachi nami, for the student who gets a "geshmack" in learning, who loves Torah, it goes without sayng that he/she will receive bracha. The chiddush of the pasuk is that for the student who gets no "geshmack", the student for whom learning is ameilus and toil and frustration, if that student is not deterred but still keeps at it, that student will also receive bracha as well.
Not sure the vort fits the words of Rashi so well, but it is a nice idea.