Inside of the head of every degree (Rosh) a collision occurs between the Light and the screen, meaning between the intention “for the sake of bestowal” and the pleasure that is directly felt inside of the will to enjoy. Direct pleasure is as if I feel something tasty in my mouth, and this taste is directly connected with my desire.
But now I have to inflict a blow, meaning introduce a new calculation, implant myself in between the pleasure and the desire which are inside of me together. I have to stand between them and give them a new form of connection, because out of the two of them, I want to build the Creator so they would treat each other with bestowal!
This is called a blow (Hakaa) because I come forth against this direct connection between pleasure and desire. And by virtue of that, I build the head of the degree.
The “face” of the Partzuf is the form of its bestowal which a person has built out of the new relationships that he wants to establish between the pleasure and the desire. He stands between them and does not let them come into direct contact because he wants them to relate to one another only in the form of bestowal. That is how he builds the form of the spiritual Partzuf.
That is, the form of the Partzuf is built on the basis of the new relationships between the pleasure and the desire. And after that, the Partzuf does not want to accept all the others parts of the pleasures and desires which were unable to take on the form of bestowal, the form of the Creator. It turns out that he is left with an excess of desires and Lights which are beyond his calculation.
That is when a clash arises between this remaining direct form, this additional, separate Partzuf in which the desire and pleasure are connected directly – and the new, holy Partzuf that has been built, which contains the right connection between the pleasure and desire, creating a “face.” And the person senses the clash between these two forms: between receiving everything for himself, as the Creator persuades him to do, and the new form of bestowal that he has just created. The mutual collision of these two forces is called “the collision of the surrounding and inner Lights.”
From the 4th part of the Daily Kabbalah Lesson 7/20/11, “Preface to the Wisdom of Kabbalah”