A person who is thrown into darkness loses all connection with the previous state of ascent. If the Creator then shows mercy on him and awakens him with Light, this does not mean that the person performed a correction. If, however, he awakens on his own with the help of the group, then he really does become corrected.
During an ascent a person prepared the right way: He put everything he possibly could into the group, using it as an “inspiration fund.” The efforts he made enable him to keep the connection during a descent. Now, by grabbing onto the end of this string, a person can awaken and through the group attract Light, energy, understanding, and faith above knowledge. Thus, he will start coming out of the descent towards a new ascent.
By means of the group a person always has the opportunity to renew the unity. Unlike the unity of the forefathers who were unable to receive the Torah yet, our unity directly connects a person to the group. This is where one’s free choice lies: to start working with the help of the group and equalize the descents with the ascents.
It turns out that at the end of the day, our entire freedom is realized in the group. A person actualizes unity only with the help of the group.
From the 4th part of the Daily Kabbalah Lesson 10/26/10, “600,000 Souls”