סימן ב-אמור וכו'

"And whoever merits this sword must know how to do battle with it — not to incline it to the right or to the left…" — See Likutay Halachos, Choshen Mishpas, Laws of Inheritance, Halacha 4, Letter 20, which writes there: this too is within the purview of what is indicated here — that in prayer one must be like one who slings at a hair's breadth and does not err, not inclining to the right or to the left. Not to the left: One must not mistakenly conclude that the prayers are in vain, G-d forbid, because one has cried out for so long without being saved — for this is the aspect of "inclining to the left," treating His attribute of mercy as if He were cruel, G-d forbid, as if Hashem does not hear Israel's prayers. Not to the right: And likewise one must not err in the other direction — saying: since we can only prevail through His grace, why need we multiply prayer at all? Let us rely on His grace alone. This is the aspect of incorrectly inclining to the right — relying solely on His grace. In truth, both together are good: one must multiply prayer greatly and constantly, and know that not a single one of our prayers is ever lost, G-d forbid; and one must know the truth that we have no merit to prevail through our prayers except through His grace — yet nonetheless we must do our part: multiply prayer always, and Hashem will do His part, extending upon us His grace for His own sake, saving us speedily. All of this is elaborated at the end of that teaching, and further wondrous matters are stated there on this topic.