Traditional, head-centered, static business plans don't work. A plan that starts in the head, with logic and reason and thoughts, lacks passion and excitement and purpose. And a plan that starts with the assumption that it's been able to capture and account for all the relevant changes that will happen in the future is obsolete before the ink is dry on the page.
The business plan that will always work starts from a different place with a different set of operating assumptions. It starts from a heart-centered approach, which means it starts with experiencing the feelings you have. Not only does this plan tolerate change, but it relies on your building in change as a key factor that will keep you on the best course.