I don't have any books to recommend, just my experience running therapy groups for many years beginning in 1985. Here are some things I learned in the process.
1. It was my job to keep the room safe and use upsets between members as learning experience.
2.Most people thought this kind of group would be venting and actively processing old pain. Instead, I focused on what we now call resilience skills. One person might suggest a topic or a problem. And we worked on what they needed to surmount the problem.
3. If a person needed to process feelings extensively, I recommended an individual session.
Laura Coleman, Ph.D.
If you wish, you can reach me here:
agentledrlaura@colemanlifecoaching.com