The Culture Code by Daniel Coyle was a really good book with the subtitle The Secret of Highly Successful Groups and in it, Coyle provides examples of successful organizations including: the San Antonio Spurs, Pixar, IDEO, Upright Citizens Brigade, Zappos, Johnson & Johnson, KIPP schools, and SEAL Team Six.
1. Build safety - how signals of connection generate bonds of belonging and identity.
Coyle writes of this as the glue area for successful groups, with having people feel safe within a group by: asking questions of them (preferably in close proximity), actively listening to the answers, showing small courtesies, and thanking people. Related to these activities are the signaling of strong belonging cues in the areas of (A) energy - investing in the exchange, (B) individualization - treating someone as unique and valued, and (C) being future oriented - letting them know the relationship will continue and move forward.
2. Share vulnerability - how habits of mutual risk drive trusting cooperation.
This skill is noted as the muscle area and all about togetherness and working as a group. The important thing isn't what roles people hold as everyone in it together, and the leader in particular needs to be vulnerable first and open... with a focus on listening, caring, and being open along with direct.
3. Establish purpose - how narratives create shared goals and values.
The third skill is described as being a focus on what it's all working towards, with plenty around mission statements and also noted towards the end of the book are the importance of both rehearsals prior to something and active group reflection after. Also covered are the ideas of naming and ranking priorities, employing catchphrases for things of import, and overall working to set teams up for success.