I think setting milestones is really important for a business (and your life as well) because you can measure either the progress or the success. This way you could know if something is not going right…

Another thing I would like to add relates to find people who can run the system for you. Many people concentrates themselves managing by their own a biz. The truth is that they could have more free time if they find good people who can run and maintain the system. By doing this you could have even more free time to spend with your family/friends or to build up new systems =D