Actually, group therapy is often more efficient than individual therapy. You can benefit from the group even during sessions when you say very little but listen carefully to others. You will find that you have much in common with other group members, and as they work on a concern, you can learn more about yourself. I will be verbally attacked by the leaders or by the other group members. Group leaders are present to help develop a safe environment.
Feedback is often difficult to hear.
As group members come to trust and accept one another, they generally experience feedback and gentle confrontation as positive and useful, as if it was coming from a caring friend. One of the benefits of group is the opportunity to receive input from others in a supportive environment. It is rare to find friends who will point out how your actions may affect yourself or others, but this is precisely what group can offer. Most people are anxious about being able to talk in a group. Almost without exception, within a few sessions people find that they do begin to talk in the group.