An article on phillyBurbs.com looks at the value of creating a business plan to use as a roadmap for small business success. The author suggests:
If you want to make a commitment to being your own boss, begin by investing your time in developing a business plan. Through the business plan, you are testing your idea, calculating how much you will have to sell and at what price to break even and to make your enterprise profitable. This is information you want well in hand before you take the risk and hold that grand opening.