This is the soul of the business plan. Many people interpret it as the advertising and promotional side of the business. It is merely a route map of how you intend to reach your business objectives. Being able to take the concept, translating it to a plan, and executing it requires ingenuity. That is precisely the reason why you need one.
Mistakes can be costly.
So the most optimum way is to make the mistakes in your head. Think your actions through. If you fail, you lose some time and you gain a lesson. Write down all the questions you can think of in terms of your business. Get together with your partners and conduct a brainstorming session.