I don't have a plan. You don't need one either.
I read the wrong kind of magazines, you know the ones that tell you that only 39% of businesses turn a profit (its true). Out of these 39% I wonder how many wrote a business plan? I wonder how many of the other 60% wrote a business plan - I'm guessing a fair few. In fact I would go as far as to say that most of these failures had a business plan.