Your business cycles are important to understand.
A down month might be from your typical cycle and not have anything to do with what you did (or didn't do) this month.
This point was driven home to me once by a Shopify store complaining about a low month. With one glance at their sales trends it was clear they were at their natural low-point in their cycle. Wait a month or two and they'd be hitting their peak.
The other benefit of knowing your own cycles is that you can better time marketing campaigns. You can shore up weak periods or boost the busy season on your schedule, not the cycle's.
Eric Davis
P.S. Beyond business cycles, you'll want to make sure you're improving year-over-year. Repeat Customer Insights can track and measure this for you as part of it's Insights system.
Go in-depth into your customer behavior to find more revenue
If you haven't installed Repeat Customer Insights yet, it's an easy way to get a detailed look at your customer behavior.