The first step is to identify the key company goals which will be the over-arching direction of the plan. These goals should be focused on three areas: financial, growth initiatives and alignment to the company vision/mission.
As importantly, it also identifies road blocks - in advance. Your business plan should provide a common vision supported by tactical initiatives that, ultimately, creates greater value for your company. It may seem daunting, but by knowing your vision and its corresponding financial targets, you will have a better chance at executing how to get there and avoiding traps in advance.