Managers get people together to talk about a problem. They divvy up the responsibilities, discuss risks and facilitate.
Leaders, however, inspire action. They tear down roadblocks. Get things moving. Progress starts when big things break down into smaller achievable chunks.
Managers focus on the process. Leaders create momentum.
Great teams win because they get off the ground and start learning. Action yields information. The first few steps create the foundation for the next hundred.
So don't wait, go.