A special prayer for sustenance for sustenance by Rabbi Yeshaiah Halevi Horovitz (The Holy השל”ה Hashla).
It is recommended to read this pray on the day before Rosh Chodesh Nisan.

Nisan begins the energy of the new year and on the 15th day of the month which is the Passover night, the full light of Zeir Anpin is revealed.