I get it. Lots of people put off the business planning because of the idea (actually a myth, but that’s a different post) that the business plan is necessarily a big deal with a formal set of contents and all.
But on the contrary, how about this: just do a sales forecast. Set up a spreadsheet with months along the columns, the main items or kinds of items or categories you sell as row names along the left, and then project your unit sales in a block, price per unit in a block, and multiply price per unit times units in a block to calculate the sales.
Use this sales forecast to get started with planning. Do a good job with it and start tracking. Next month you review those sales and compare them to actual results. They will be different, they always are, but that’s the good part. Compare the plan to actual results and start managing your business better.
That’s the first step towards planning, and good planning means management.