The reality in affiliate marketing is that it's like most other work-at-home ventures; there are a few who are filthy rich, a good number who are successful enough to meet their goals, and a ton who aren't making anything. So, the question isn't really whether or not affiliate marketing is a viable income option (it is), but whether or not you can make affiliate marketing work for you. Only you can decide that. But to help, here are some tips.
Giving away a free informational product such as an e-book, an email series or a mini course is a popular tactic many affiliate marketers use. Usually, your readers will have to provide their email addresses to receive the product from you. You can then use this to sell to them via email marketing. Additionally, an informational product can generate interest in the actual product you're trying to sell. If your product is popular enough and brings enough traffic to your site, you could also monetize the traffic in other ways, such as AdSense.
Many affiliate marketers use paid advertising to generate additional traffic to their site and drive more sales. Paid advertising on social media is often a good place to start, as these networks tend to be more affordable.You may also want to consider taking out inexpensive banner ads on small niche sites. Depending on your niche, Google AdWords could also be a good option to drive some paid traffic to your site.
When promoting affiliate offers, just make sure you are fully aware of all the terms and conditions attached to your affiliate program. Some programs can be strict about how they allow you to promote their products. For example, some may limit you to banner ads and links only, while others will allow you to use paid advertising, but won't allow email marketing.