The Zohar, Chapter “VaYikra (The Lord Called),” Item 324: Happy are the righteous, for the Creator teaches them profound secrets of above and below, and it is all for the Torah, since anyone who engages in the Torah is crowned in the crowns of His Holy Name. This is so because the Torah is the Holy Name and one who engages in it is registered and crowned in the Holy Name, and then he knows the hidden ways and deep secrets of above and below, and he never fears.
There is no other way to connect with the Creator, with the true Upper reality (which we want to reveal, enter, and exist in), but with the help of the Light. It can shine upon us only if we cultivate the desire for it.
We can only develop this desire with the help of the group. A person only has a point in the heart, and in order to attract the Light that Reforms, he needs additional strength, which he can receive only from the group. The desire one receives from the group already has the intention to bestow, and with this force, he will have a connection with the Upper Light. In order to acquire a connection with his group, a person must lower himself before it and raise the importance of the goal.
In other words, he needs to work against his own desire to receive pleasure, against his ego. Therefore, when a person works with the group, he can appeal to the Light that Reforms so it will grant him a connection with the properties of bestowal, with the spiritual world.
From the 1st part of the Daily Kabbalah Lesson 5/27/10, The Zohar