I find writing blog posts on a regular basis extremely rewarding. I would like to do it every day. I'm sure doing it consistently over the long term will have large benefits.
At the same time, it's easy to start writing something only to then find it lacking. Quickly, the creative process becomes clogged and I don't publish anything any more. I start and start, but nothing is good enough.
What is useful for me is to be explicit about when something is good enough to be published. For me, the rule is that it should be simple and clear. It doesn't have to be good, original, helpful or creative. If it's simple and clear, it's good enough.