Make a Writing Schedule and Open Every Section with a Summary
Observe timing in writing your business plan. Define a certain time and try to write your business plan during that time. Getting to the final version may take long, and you may even fall behind the schedule, but specify for yourself the task of, say, spending two hours a day or week on it.
When you draw away from an ongoing job, you need to constantly remind yourself of the plan you had in mind and at which stage of the work you were. It makes you turn away from focusing on your future path. This means consistency is needed in your business plan. If you gather some information and intend to complete it later on, the information will get old and you will also forget a part of it. Therefore, try to get to a reasonable stage of the plan during a certain period of time. This is also why writing a business plan may take up to six months, and why you should not assume it can be finished in twenty days.
Avoid digression in your writing and classify the contents in the business plan. When dedicating a chapter to a certain topic, write down all the items pertinent to that topic under the same title, so you can easily have access to all the contents of that topic.
Use all the titles in your business plan as much as possible. Write in the first two or three paragraphs of each section, especially the detailed ones, a summary of all the points you bring up in that section. For example, in the chapter related to your business's products and services, first write the related list and define the generalities of what you want to present in the market. Then explain the details. This will give the readers an idea of what each section is about.
Write a flexible business plan as well. One of the reasons for flexibility, which is a business rule, is that it allows you to turn threats into opportunities. The plan route must be sufficiently clear and you need to abide by your roadmap, because you cannot afford to gamble with your business. However, it does not mean that your plan is absolutely unchangeable. A plan which cannot be altered is affected by trivial issues.