Give everyone a chance to get involved and contribute, in a way that best matches up with their talents, interests, and availability.
Aim for small victories. Don't shoot for the moon, at least not the first time around. Other things equal, it's better to have a small success than a larger failure, because your group is more likely to stick together if it succeeds.
Don't be afraid to ask for help, especially from people in public office. Public officials represent you; they are accountable to you; and active neighbors are probable voters, a constituency few would want to antagonize.
Be concrete. When decisions are made, make them specific -- and make sure everyone knows what they are.
Whatever you decide to do, follow through on it. Keep your commitments, to maintain our credibility with both your supporters and your opponents.
Keep the lines of communication open, so that everyone knows what's been happening, where matters stand now, what's coming up, and where to go with information or ideas.
Finally, learn from experience, and from your mistakes, so that you will do better the next time around