Chazal say that Mordechai hung around the palace of Achashverosh, because he realized that if a Tzadekes like Esther is taken away by a Rasha, Achashveirosh for marriage, it must be that some great Yeshua will take place for Klal Yisroel through her. It would have been appropriate for Mordechai to rip his clothes and make a Tisha B'av when such an ugly repulsive thing happens!
Yet, he saw only good in such a Matzav, and he said Gam Zu L'tovah even on such a horrific situation! He was living in the most depressive era of Klal Yisroel, during and after Churban Bayis Rishon. Yet, he saw only good, and he was sure of it! Perhaps he remembered that the day of Churban Bais Hamikdash the K'ruvim were hugging each other!
No wonder he was capable of defying Haman and risking his life on a daily basis without fear of the worst madmen [Achashveirosh and Haman]. He lived with such extraordinary Bitachon, and he saw unlimited goodness in Hashem even in the worst times! And the power of saying Gam Zu L'tovah actually produces good, so we owe the whole Purim story to Mordechai’s positivism!
It would be appropriate for a true Ehrliche Yid and especially a Ben-Torah to want to emulate Mordechai and Esther, instead of being a spectator of someone else’s greatness; by being M'kayem Mitzvos HaYom of Purim without aspiring to be similar to the Tzadikim who caused it. We don’t have the opportunity to be a Mordechai and Esther, since there isn’t a Gezeiras Haman, Chas V'shalom presently. But by studying all their actions, we can at least try to do תַﬠַגַמ וֹדָיֶשׁ םוֹקָמ דַﬠ the most we can. How important it is to constantly say Gam Zu L'tovah as much as possible throughout our lives!
