You need to know everything obtainable about your customers. This list will get you started. You will need their age, sex, marital status, income levels, education levels, geographic locations, where they shop, if they go to church, if they have kids, ages of children, political affiliation, what they like about your company, what they don't like, why they shop with you, what they value about your products/services, what they like the most/least about products/services, and whether prospects are unaware of your brand or products/services. Customers want you to know certain things about them and if you do, they will remain loyal to you as you take time to know them.
Re_formulating objectives: after the close examination of data gathered in the previous stage, sometimes it is needed to re_formulate the initial objectives, in order to address all the issues that might have come up from the previous stage. The distance between the initial objective and the re_formulated objective will be covered by appropriate strategies. We must ensure the re_formulated objective is SMART as well.