Some business owners hope to find a single strategic plan that will define their businesses today and in the future, one that they will never have to change. They hope for a single plan that is well thought out, that they will be able to stick to over the long term so they will have an easier time succeeding. The idea of having a business plan is essential, but a business plan that works forever and never has to be change is simply a myth. Here's how to plan and still leave room for whatever the future brings.