Take a look at this photo and you will have no doubt about what an effective, self-directed team can accomplish.
Step 1: Have a clear vision of the goal.
Step 2: Clearly communicate the vision to all of the team members.
Step 3: Listen and watch the team members to determine if everyone understands the goal.
Step 4: If all the team members do not understand the goal, you will not likely succeed as a team. Spend some time determining what information has not been clearly communicated and work toward ensuring that everyone shares your vision.
If you are successful at accomplishing steps 1-4, you will likely have a self-directed, integrated team even before the work has begun. The rest of the work, while not necessarily easy, is process.