Let Others Challenge Your Business Plan
Let others comment on your business plan. Do not put the whole trust only in yourself; seek the opinions and views of others. Even if an experienced expert writes the plan, you still need to discuss it with others.
Be hopeful that others, whether experts or those with limited knowledge, would spend time reading it and commenting on it. Anyone may mention a point about a part of your business plan which would make you change your path or fix some of the unwanted bugs and drawbacks in your work. It does not help that no one knows what you are doing.
Discussing the business plan with others leads to many debates, and out of these debates various answers will emerge. Something is wrong when you do not discuss and everyone agrees with what you intend to do. These arguments challenge you and activate your stream of thoughts.
The same idea works for your executive summary. A reasonable technique to assess the extent of achieving your goals is to ask various people to read it and tell you their impression. Since they simply tell you what they conclude from your writing and do not have any idea beforehand, they are suitable options to assess your craft. If their conclusion is the same as the one you intended to convey, there will be no problem. Otherwise, you need to correct your writing and refer to other writing methods or standards. Try to find out whether the reader has failed to comprehend the entire text or only some parts need to be corrected.
You can also take a third-person point of view and keep a time distance after the preparation. Check the summary again and see whether you understand the concepts you were trying to convey. The reader of this summary must realize what your business is.
Finally, define some criteria and methods to evaluate your course of action. You need to evaluate yourself constantly and give yourself a score in the course of writing and implementing the business plan.
Business is not a place to be alone with your own opinion. Invite criticism early, while it is still cheap to change course.