Question: What is sensitivity to the Light, what does it depend on, and how can it be developed?
Answer: Sensitivity to the Light depends on how much a person can suppress his dislike of others and connect with his friends coercively, against his desire.
According to this effort, he begins to develop sensitivity to the Light.
In general, we do not want to get closer to our friends. But to the extent that each of us still tries to do this, we develop sensitivity to the Light within ourselves, sensitivity to the quality of bestowal, love, and connection.
From the Kabbalah lesson in Russian: 6/3/18
Such Restless Rest
How Can We Develop Our Sensitivity?
The Threshold Of Sensitivity To The Light