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. Secondly, group members will often bring up issues that strike a chord with you, but that you might not have been aware of or brought up yourself. I will be verbally attacked by the leaders and by other group members. It is very important that group members feel safe. Group leaders are there 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 even confrontation as positive, as if it were coming from their best friend. One of the benefits of group therapy is the opportunity to receive feedback from others in a supportive environment. It is rare to find friends who will gently point out how you might be behaving in ways that hurt yourself or others, but this is precisely what the group can offer. This will be done in a respectful, gentle way, so that you can hear it and make use of it. Group therapy is second-best to individual therapy.