3827 – A Blessing Is Like Rain, Prepare Yourself as a Vessel – ברכה היא כמו גשם, התכונן להיות כלי

The Rebbe writes that while he will pray for the recipient's health, a blessing is like rain and requires preparation to receive it. He advises increasing Torah study, mitzvah observance, influencing one's environment, consulting a medical expert, and checking tefillin. https://www.torahrecordings.com/rebbe/igroskodesh/012/001/3827