For this discussion, consider that the demand for your services begins to exceed the supply (which initially may only have been you, or one or two colleagues). If your consultancy is not properly staffed, resource constraints can stifle growth. However, if the organization is overly staffed, costs may exceed revenue and cause the business to suffer financially, or, worse, be put out of business entirely.
How do you determine a growth plan going forward? What are some methodical and systematic approaches to growth? What coping mechanisms can you use in your own practice to bring in resources, as needed? If you use contractors, at what point does it make financial sense to bring them on as employees in the practice?