The Surrounding Light influences a person only to the extent of his desire for spirituality. He receives this desire from a Kabbalistic group. The group is his environment which exists on the same level with him; from it he absorbs everything, like a seed planted in the ground.
The seed itself is dead. It comes alive only when the seed is introduced into suitable soil. The enlivening happens only as a result of the environment. Without a proper environment the seed is merely a lifeless informational gene. In the appropriate environment where it begins to be influenced by the sun and other forces of nature, the seed comes to life.
The seed must interact with the environment in order for the general Upper Force to operate on it. The same holds true for a person. A person is influenced by his or her environment, just like a seed will grow and thrive only when planted in the appropriate soil with favorable surrounding conditions. If a person does not place himself in the right environment, he shouldn’t expect any spiritual advancement.
This is a fact that ought to be clear to everybody. Only to the degree that a person absorbs from his environment does he receive the "sun" and "oxygen," (the requisite forces) which begin to cultivate him into a "tree." Then this force will be felt inside him even by those who are unable to clearly see it with their physical eyes. Since we are all connected within a single general system, other people will feel that within us lives a true and clearly felt spiritual charge: the Light within the vessel.
From the Daily Kabbalah Lesson 5/14/10, Article “Make Yourself a Rav and Buy Yourself a Friend”