Don't blame yourself entirely, It's not about you being medicore, although after 2 years work on a project that's not meeting your goals something's amiss. Idea

Don't blame yourself entirely, It's not about you being medicore, although after 2 years work on a project that's not meeting your goals something's amiss. Ideally you validate the market and your place in it early on, for instance by hitting the front page of HN/a subreddit or something like that with one of your articles every so often. If your hit rate is too low your market probably is too small or you're not giving them content they want (even though it may be high quality content that they need...). At some point you change what you're doing, change your goals or move on.