While I still recommend the business planning process, I caution you to realize that a beautifully crafted document does not always equal business success. I've worked with many entrepreneurs who successfully launched without a plan, and some with beautifully written plans that never materialized. You and your business idea are unique. Your planning process will be unique as well. Be wary of one_size_fits_all advice or pronouncements from experts about how you should proceed.
Why is that? The intent was there; the energy was present; and ideas were flowing. That's the easy part _ coming up with the ideas. The success of your planning doesn't rest on the ideas, but rather, implementing those ideas. It's true, companies need to foster innovation in their business planning, but more importantly, they need to create a business environment that enables team members to execute these ideas with an "on_time, on_budget" mindset. That is where the work begins.