The Navi says in the name of Hashem that I will remove your stony heart, and give you a feeling heart. Look how Hashem can change a person! All your Ruchaniyus issues can disappear, if you believe in the power of one Parshas Parah. Instead of those ice-cold Tefilos, now you daven with feeling, and you can even cry; no more: לֵב אֶבֶן cold heart! I know a person who had major issues with Shmiras Einayim, until he told Hashem: אִלְמָּלֵא הַקָּבָּ"ה עוֹזְרוֹ לֹא יָּכוֹל לוֹ “It is in Your hands to save me from my Ta'avos, and I can’t do it without You.
Before Pesach used to be a time especially for getting rid of Ruchaniyus-type Chametz. It’s a time to daven extra hard, and to work on having the main Bitachon, i.e., Bitachon in Ruchaniyus. Many who suffered from lifetime bad-habits, like Ka'as, Chanufa flattery, and Sheker, have suddenly turned around. The Parah Aduma (“red” cow) which symbolizes sin and bad habits, can suddenly be channeled in the right direction.
The more you repeat the words of the holy Navi: וְזָּרַקְתִי עֲלֵיכֶם מַיִם טְהוֹרִ ים וְנָּתַתִי לָּכֶם לֵב חָּדָּשׁ וַהֲסִרֹתִי אֶת לֵב הָּאֶבֶן מִבְשַרְ כֶם יחזקאל לו כה-כו I will purify your heart, the more you believe in their truth; and the more you believe, the more it will happen. R’ Shimshon Pincus Zatzal once took me aside into a room privately, and told me that he repeated: לֵב טָּהוֹר בְרָּא לִי אֱלֹקִים תהלים נא יב thousands of times, and “the entire Shimshon Pincus comes from this”.
