There are a few key indicators that can help you tell if your conversion rate optimization efforts are working. First, take a look at your website traffic. If you see an increase in the number of visitors to your site, that's a good sign that your campaigns are reaching a wider audience. Second, track the number of leads or sales that you generate from your website. If you're seeing an increase in the number of leads or sales, that means more visitors are taking the desired action on your site. Finally, take a look at your conversion rate, which is the percentage of visitors who take the desired action on your site. If you're seeing an increase in your conversion rate, that means more visitors are completing your desired goal. If you're seeing positive results in all of these areas, then your conversion rate optimization efforts are likely working.