Answer: By using the Ohr Makif (Surrounding Light). All of our emotions are positive or negative fulfillments of our desires, and fear is a lack of fulfillment.
It is the fundamental component of our sense of life, the world, and it comes from empty desires. When we are fulfilled, fear disappears, and when we are empty, the feeling of worry and insecurity appears.
There are close to 800 kinds of fear in the world. It is a very serious feeling of empty desires, called a Kli (vessel).
It is possible to cure fear with the help of the wisdom of Kabbalah, but to do this we must study it systematically and most importantly to study in a group! The empty desires will rapidly be filled then, and negative emotions will be replaced by positive ones.
So the most useful thing possible to hope for is working in a group since it is very difficult for a single person to achieve such a state. It is very easy to arouse the Ohr Makif in a group, and without a group, it is very difficult.
From the Kabbalah Lesson in Russian 8/21/16