Remember to measure what matters to you and your business. I wrote an article earlier in the year on 'The One Number' which goes into a bit more detail on choosing a metric to measure like this.
The visual incentive to 'not break the chain' is what spurs you on.
Alternately you could use a similar system if it's only a few times each week that you need to hit your target. For instance, you probably shouldn't go to the gym every single day, so you could aim for an average of 5 times per week - and also track this on the calendar.
We've put together a template for you to use, for both weekly and monthly goals to track visually.