Our followers (Anash) have the custom to begin saying forty days before Purim, "Save me from the klipah (impure shell) of Haman-Amalek and merit me to the holiness of Mordechai and Esther." It is known among our followers that one who says this forty days before Purim will merit the illumination of Mordechai and Esther during the reading of the Megillah (Scroll of Esther).

Further regarding this is brought in the book 'Avneha Barzel' (Conversations and stories from Reb Noson zt"l, section 13): "Reb Noson zt"l once related that on the eve of Purim, during the Fast of Esther, I cried out to Hashem Yisbarach: 'Save me from the klipah (impure shell) of Haman-Amalek!' And the matter seemed to me as if Haman-Amalek was standing over me to strike me with an iron rod... — 'mit a drang' (with a crowbar)." Below are quotes from the classes of the Gaon and Tzaddik Rabbi Eliezer Berland shlit"a regarding the matter of crying out forty days before Purim:

"Mordechai and Esther are Alive and Enduring!"

And when a person reads the Megillah, he merits to see Mordechai and Esther within the Megillah. Because the Rebbe (Rebbe Nachman) says that whoever cries out 40 days before the Megillah, "Save me from the klipah (impure shell) of Haman-Amalek," will see Mordechai and Esther inside the Megillah. Mordechai and Esther are alive and enduring! Just as it was with Rav Yeiba—Rabbi Pinchas of Koritz, as is known, used to disagree with Rabbi Yaakov Yosef of Ostra—who was called Rav Yeiba. So Rabbi Pinchas of Koritz said, "Whoever wants to see Mordechai the Tzaddik, let him go to Rav Yeiba." They thought he was drunk. Again he cried out, "Whoever wants to see Mordechai the Tzaddik, let him go to Rav Yeiba!" The third time he already shouted it. Then one of the students realized, surely this isn't for nothing, it can't be from drunkenness, to repeat the same words three times. One student realized, ran quickly to Rav Yeiba, and he saw exactly a holy, elderly Jew exiting. He entered, and his daughter said she didn't know what happened. Because Rav Yeiba would sit all of Purim alone; there were Tzaddikim who would sit all of Purim alone. Rabbi Levi Yitzchak (Bender) would sit all of Purim alone. They would seclude themselves with Hashem, dancing with Mordechai the Tzaddik. Tzaddikim on Purim can perform rectifications (tikkunim) even more than on Yom Kippur!!

"Standing Over Him with a Giant Beam to Kill Him!"

A person goes to the field (for Hisbodedus) and looks at the antiquities, the excavations, the panorama, the lights—but when you come to the field, cry out, Master of the World!! Reb Noson cried out—this was 40 days before Purim—and he cried out, "Save me from the klipah (impure shell) of Haman-Amalek! Save me from the klipah of Haman-Amalek!! From the klipah of Haman-Amalek!!!" "Rescue me from Haman-Amalek, he is standing over me with a 'drang'!" (Save me from Haman-Amalek who stands over me to strike me with an iron rod) — he felt as if Haman-Amalek was standing over him with some giant beam to kill him!!!.