There is nothing that cannot be sold if you know how to sell it. So, what are the methods that will help you sell anything? There can be a lot of answers but the number one trick is to build an audience. You can sell anyone if you have an audience. You can promote your products to your audience to sell products and services. There are a lot of ways to build an audience, for instance, you can build traffic on your site, build your email subscribers, build followers on social pages.