Churches have support groups and there are many twelve-step groups. Some of those groups are healthy, some are not. A good group has requirements other than just wanting to be healthy. If you do not have a particular problem, it is often difficult to find a group to join. Yet, people with no major problems need to be part of a healthy group too.
Healthy groups have two leaders.
One that helps the group move in a certain direction, and the one that helps the group members relate well to each other. The leader of an unhealthy group lets one person dominate the time and control everyone else, or at least control the topic, meeting after meeting. Groups can help us get what we want out of life, whether it is feeling better about ourselves or building a yacht. This is possible because a group of people has collective talents from which the individual members benefit. Members of groups are also stimulated to be more creative than they would if they were alone.