SWOT Analysis and Business Planning requires that you have a strategy to increase your growth. If you are not growing, then inflation or competitors may eat your lunch.
So, you can start with SWOT template. Just go to google.com and type in SWOT Template.
However, to make yourself even smarter, do a market survey and look at the strengths and weaknesses of you and your competitors and compare the demographics or firmographics of your customers and your competitors customers. Also analyze this data by who is spending the most. Go after the profitable customers.
It's that simple...if you do it. Just.