Now, AdSense seriously is not a sustainable platform to make a long run living. Even with a good amount of site visitors and decent values, you’re still incomes on par with a retail job. If you are looking to “work your way up” and obtain a much higher income from your site, you wish to enforce other forms of monetization. Affiliate advertising is commonly the good go to starting marketing path, basically because it’s easy to begin through a site like Amazon and it’s easy to ramp up. Beyond that you can create and sell your personal merchandise, or get into more strengthen agencies.
Where you grow from there is up to you.