The Lean Canvas approach to your business planning has helped hundreds of businesses otherwise struggling with their business plan, to finally understand what they are trying to accomplish. In reality the Lean Canvas helps people talk about their business model in terms of:
How will you create value for you customers from their perspective?
How will you capture that value in the perception of your customers?
How can you convert the captured value into desirable value (like money!!)?
Once you can thoroughly explain, and only after you can thoroughly explain, your business model are you really ready to tackle developing and writing down your plan to implement your business mode.
There are additional articles and resources throughout this site to help you finally get control of you business plan.