In the article “613 Recommendations and 613 Commandments,” Introduction to The Book of Zohar explains to us that a person consists of 613 desires, and to correct them we do the 613 commandments. After all, this is specifically what we were commanded to do: to correct each and every desire and use them for the sake of bestowal.
In general, the desires or the commandments are divided into 248 positive and 365 prohibited Mitzvot. On the “forbidden” desires we must have to impose a restriction (Tzimtzum) and not use them. And with the 248 Mitzvot (desires), we need to use them as reception for the sake of bestowal. And that is how the person corrects all his 613 desires for the sake of bestowal: part of them through action and part of them through inaction.
The Light that Reforms corrects all the desires. Once it was Ohr Pnimi (Inner Light) that filled the desires, and after that it was removed from them and was left outside as Ohr Makif (Surrounding Light). Now all the desires are corrupted with an intention for the sake of reception, but we can link them with the Ohr Makif so that it will influence them and correct them with an intention of being for the sake of bestowal instead of being for the sake of reception. And after that, to the degree of the change of intention to being for the sake of bestowal, that Ohr Makif will enter into the desire in the role of Ohr Pnimi.
In this manner we serve as intermediaries, as “links” between the Ohr Makif and the corrupted desire. This is our work.
From the Daily Kabbalah Lesson 8/26/13, The Book of Zohar — Introduction, “Rejoicing in the Holidays and Not Giving to the Poor”