I've been working with and studying successful groups for decades. My biggest takeaway from my positive psychology graduate studies was that the best way to help all groups succeed is to study and apply the practices of successful groups. What many of us in this space observe is that it's the quality of conversations that play largely into the success equation. Successful groups talk more freely, listen more deeply, question more smartly and think action is the best learning media around.
They produce the kinds of fabulous outcomes and breakthroughs we see today in technology, medicine, community transformation, the arts and entrepreneurship. All the ways people have better access to quality of life come about as the result of successful group collaborations. Best of all, their practices can inspire and inform any group's development.