A complete, thoughtful business plan is one of the most valuable tools in helping you reach your long-term goals. It gives your business direction, defines your objectives, maps out strategies to achieve your goals and helps you to manage possible bumps in the road.
Set yourself a reminder to review your business plan regularly. If you have a team in your business, holding brainstorming sessions is a good way to benefit from their knowledge - it ensures you are all on the same page and that you get their support.
If you don’t have a specific immediate need to show a formal business plan to a banker or investor, then you are probably better off doing just a lean business plan, for your internal use only. To make the best impression on banks and investors, your business plan outline should be presented in the standard business plan format.
The planning process helps you learn about the different forces and factors that may affect your success. If you are already in business, it helps you to step back and look at what is working and what you can improve on. Instead of worrying about the future, a business plan helps to give you a sense of control over your business and your livelihood.