You're going to write a blog post on your site about how to make passive income, which you are doing by hosting your site about how to make passive income! I don't think it can get more meta than that!
When I applied for my professional engineering license in Canada a few years ago, I blogged about the process because I found a total lack of such content when I looked for it. I haven't touched the blog since I got the license (over a year ago) and traffic and "income" (I profit $5-$10 per month, it's a very niche topic) have increased steadily since then. Almost everyone finds it through organic search.