Another thing to consider is that even if you break even on the first sale, you're still winning. All you need to do is create more content about other problems that target market may have following the same principle and queue them one after the other. For example if we target women that want to lose weight they may also have wrinkle problems, digestion problems, diabetes, aging problems etc. We can easily create a chain of issues we run the email list through, let them opt in for what matches their issues and make several sales to that audience.

Don't sacrifice morals for a quick buck — At the outset, you'll want to do all sorts of things to make money online, but don't sacrifice your morals for a quick buck. Not only will you put people off, but you'll lose Google's trust. You also shouldn't concern yourself with things like Adsense or other ads on a blog before you have around 100,000 visitors per day. Yes, per day. 
Beyond your time and patience, affiliate marketing implementation requires resources. Having a fully developed program dictates that you design creative and sales materials to provide to your affiliates, write guidelines and tip sheets, help those who may be less tech-savvy, alert affiliates to new products and promotions, etc. Once your program grows, you’ll also probably find it necessary to hire an actual program manager to run it. This, of course, doesn’t include the cost of commission to both the network/platform and the affiliates, which needs to be high enough to incentivize publishers to sign up for your program and promote your products.
If you have a good idea for an app, and the skills to create it, then producing your own premium app can be profitable. However, with so many free apps available, it may be hard to convince people to pay. If you want to go down the premium app route, consider having a basic free version to encourage people to download the app in the first place. You can then provide the option of upgrading to a premium plan once users realize how useful the app is.