I used to need membership in the club too.
What you have to do is decide what you can realistically commit to your blog as far as how much content you can produce and then honor that commitment. A year or so ago I told myself I would publish one post a week. I picked a day to publish and made sure that every week on that day there was a new post. After awhile that one post became part of my usual rhythm and it wasn't so hard to meet the once a week publishing schedule. Then I added a second post a week and again I make sure to always publish a post on the same two days each week.
I think the consistency is more important than quantity and naturally you should set the consistency based producing quality.