Great teams look forward. It doesn't matter if you last outreach event or service was the greatest success or the greatest failure, you have to keep looking forward. If it sucked, get over it. If it was amazing, enjoy it but don't rest on your laurels. Don't fight the last fight again.
Great teams are about the future and getting the next job done.
There they are, my observations on what makes a great team great. You can let me know what you think by posting a message in the message forums.