If you do this, or know this already, ignore me, but so many people DO'NT do this, and wonder why are finding it hard to get anywhere. Normally, if you get in a car to go on a journey, you know beforehand where you are going, and how to get there. However, in Internet Marketing terms, many never bother to work out what the break down is regarding how many sales you would need to make. If you do just a simplified version below, you are ahead of most people.
Step 1: Look at what your monthly gross salary is (before tax). Let's say for example it's $4000.
Step 2: Look at the commision of the main product you are promoting, either as an affiliate or it could be your own product. Let's say you are getting $27 per sale.
Step 3: Divide your gross salary by the sale value, so $4000 / $27 = 148. This is the number of sales you need to make per month.
Step 4: Divide that by 30 days to give you a rough figure for the number of sales a day you need to make. So, 148 / 30 = 5 (4.9 rounded up). So, you now know you need to make around 5 sales a day.
These are of course rough figures, you all know some days you make more sales, some days less. Also, you may have up sells, down sells and so on. If not, you should do ;-)
Anyway, the point of all this, is if you are currently getting one sale a day, look at what is working to get that sale, i.e traffic source, and then do more of that. It could be more video marketing, or more articles, more blog posting or whatever.
Also, it might be time to look at tweaking your landing page / sale page. Even just changing your headline can double your conversion!
Hope this all helps some how.