Says the Sfas Emes, a person who works to find the improper thoughts within himself and to repair them is called one who ãåô÷ áúùåáä, he bangs on the door in teshuvah. And if he fell in with aveiros for which teshuvah is ineffective, R”l, since he’s engaged in the work of teshuvah, and he finds the things that he must rectify... he immersed in the “Rambam’s mikvah” multiple times a day, then the Ribbono shel Olam opens a special door for him to forgive even those severe aveiros. A special door is opened for those who bang on it in constant teshuvah.
A ãåô÷ áúùåáä is one who realizes that he thought or spoke in improper ways, and he implores Hashem that he shouldn’t go back there. He pays attention to his mistakes, and he accepts upon himself not to repeat his mistakes and to truly change. Those who engage in this—beginning with a few times during the day, going up to hundreds of times a day—merit that Hashem will open this special door.
