You need to create a marketing funnel that gives you several levels of conversions. I tend to name these Lead -> Prospect -> Activated Customer -> Repeat Customer. Organic traffic is all well and good, but is it targeted and segmented? You could have an information products business or an affiliate marketing business or one of several other business models. It all comes down to evaluating your site and seeing where the value is for some segment or segments of your audience in order to engage them in a buying relationship. Customer activation is without question the most important piece of a business like this. Happy to discuss with you if you'd like.