Consider one of the teams that you work in now. Are they high-functioning? If so, what are they doing right and if not, what areas could they improve in?
The team I was recently working with was extremely high-functioning and great to work with. They were all motivated members of the health-care team that show true kindness to all of our clients. They are always willing to lend a hand to a co-worker in need, even if it means cutting a break short. They are dedicated to their positions and it was an honour to work with that team!
It is so important to have a cohesive team as you described. The work can be challenging and stressful and having a high-functioning team can make a difference. It also leads to better patient outcomes.