I take pride in being consistent with this blog every week since June 5 of least year. The only time I broke consistency was when I made the switch from posting on Saturdays to posting on Thursdays which I did in order to reach a larger audience. Nearly 40 weeks later I haven't missed a single post, sometimes maybe going a little too far to ensure I could get a product that I felt proud of out to the world. I'm not saying this to brag, but to illustrate the level of importance I feel should be taken to put out a consistent product.
I used to only post here when I felt like writing. What put out was spotty, all over the place, and didn't resonate with people. When I look at the metrics for the site those posts are among my least viewed, some even sit flatly at zero. Some of that was the fact that I was so new, and maybe just a little bit to do with the quality of the content (or lack thereof). But I'm sure a lot of it had to do with the fact that I would lose readers as soon as I gained them as I would make them wait weeks, sometimes _months_ for some new content. By that time they had already moved on to another source and forgotten about my content completely.
Being consistent isn't easy though, especially since we all have many other commitments. It can be very easy to overextend yourself between client projects, a part-time job, maintaining a healthy lifestyle, socializing with the people you care about, and just taking some time to relax. It often feels like there's just not enough time in the day. My advice is to start small and build up as much as you can while still producing content you're proud of. Don't try to publish a blog post every day if you take a few days to write something truly valuable. Quality over quantity is just as important as consistency.
Without getting into numbers, since I started posting consistently on a weekly basis my numbers have been steadily climbing. Some weeks are better than others, but that's just the nature of content. As I often say, progress isn't a linear path, and that's especially true with the chaotic nature of web stats. It can be easy to get discouraged when you're not seeing the improvement you hope for, but perhaps the most important thing about being consistent is to never, ever give up.