When you invest time into creating a product, be it an article, an ebook or an app, there needs to be constant promotion of that work. Often advertising your old work is boring, as we always strive to make new shiny products. So instead of focusing on advertising old content make it integrated with your new one.
As a blogger I always interlink my new articles with the old ones. Especially the ones that have value. As we grow AlphaEfficiency Magazine, we are being mindful of how our content is integrated and connected. You can see this integrated approach working across apps, gadgets, book series and blog article series.
Keep making new things and make them a part of a bigger picture. This way you are re-advertising your own goods and services while maintaining freshness.