Great Teams have a "CAN DO" attitude. It is not what you think though. That "CAN DO" attitude is that everyone seeks out what they "CAN DO" for their teammates. Only when everyone is doing this can a team be greater than the sum of its' parts.
My family. One, being married for over 28 years and two, my daughters. To be frank my wife has done most of the heavy lifting there. So, my greatest accomplishment is convincing her to say yes.