Likutei Halakhot, Orach Chaim, Laws of Morning Hand Washing 4:3/ליקוטי הלכות·אורח חיים·הלכות נטילת ידים שחרית ד׳:ג׳

11. And this corresponds to the force of the miracle of Chanukah until we merit a new mitzvah to light the Chanukah candles in our house each year. Because the lighting of the Chanukah candles is lit from the shining of the Holy remainder of the nullification of the purpose, that from there is all the reception of Torah and mitzvot, which is the aspect of the general rule of all the Holy Lights, the aspect of "because the miracle of the candle and the light of Torah". Through this, all troubles and Sitra Achra are nullified; from them come the absorption of the kingship of the gentiles. Because the kingship of the gentiles stands over Israel to make them "forget Your Torah", etc. It is known, that the essence of their strengthening is by means of Torah, as seen above. Therefore, they wanted to forget the Torah, G-d forbid. But the righteous men in that generation - Matisyahu the High Priest and his sons - nullified themselves with the purpose of being nullified to the Blessed Name, and then sent out their souls from there, and sacrificed their souls on behalf of Israel. This is the aspect of "nullification", because this is the essence of the great advice in all of the troubles, G-d forbid, that come upon the Jewish people in general or what passes upon every person specifically, G-d save us. Because there is no correct advice to chase away from them except through nullification of purpose; in other words, to shut your eyes tightly and to make yourself like you are sleeping, and to nullify yourself with the purpose of nullification as if there you have to feeling at all, except to attach and nullify your thoughts to the light of the blessed Ein Sof. This is something every person can do as I heard from his holy mouth (i.e. Rebbe Nachman's) that even though a person may not be worthy to complete nullification like the great and perfect tzadikkim, still a person is able to nullify himself some degree if he truly wants to. And by means of this nullification, the problems and suffering is nullified from him. But afterwards, it is possible they could become even stronger, G-d forbid and a person must strengthen himself to nullify them through Torah thoughts or through being involved in the Torah with a new desire, as seen above.