Not long ago, a young, observant, non-Chabad woman in my community - who normally does not come to our Chabad house, came to daaven in our Chabad house on a Shabbos morning since her husband missed his regular minyan that had begun at eight o'clock.
I was reminded of a story of the Rebbe, which I proceeded to tell her. It was about another Observant lady who could not fall pregnant and wrote to the Rebbe who advised her to be stringent in her observance of Taharas Hamishpachah. She was rather surprised since she was already observant and kept all of the halachos. After much deliberation and soul searching realized that she sometimes missed a personal examination (bedikah) here and there. While she made sure to do at least one a day, she was sometimes slack about the second one.
Heeding the Rebbe's words, she decided to take make sure that she observed and performed this aspect of Taharas Hamishpacha more strictly, and carefully. By the grace of Hashem, she immediately fell pregnant!
When I finished telling the story, this young woman's face turned colors. She was in shock. She said this is the only area in Taharas Hamishpacha that she has been less than strict about. She went home, determined, I am sure, to be extra careful in her observance of this and every aspect of Taharas Hamishpacha.
A few months later, she came back to tell me that she was three months pregnant! She took the story I had told her to heart and in that first month, she fell pregnant!
I told her she should use this experience to inspire other women to be more careful in their own observance of Taharas Hamishpacha.
As for me, I was very humbled and thought, how lucky we are that as Shluchim the Rebbe simply puts the right thoughts into our heads to inspire people to become keilim (receptacles) for brochos.
May we always be blessed with the right words, and may the strengthening of this mitzvah bring many more children to this world in Taharah.