After establishing your overall business goals, look at the source of your revenue - your customers.
You need to know how many active customers you have. This number is easy to determine if all you do is new construction. However, from a service perspective, it is much more difficult to answer. Find out how many customers you have done business with during the past year. How many total customers are on the list? If you are like most contractors, the numbers of total contractors will far exceed the numbers who have done business with you in the past year. Call some of the customers who you haven't heard from in a while. Find out why they haven't used you. Be prepared to find out that they have moved, died or that they are using another company now in addition to telling you, "I just haven't had a need."