You don’t have to bet everything on a single blog post. And you don’t need to stop at 100 blog posts.
So the answer to successful blogging is just more blog posts.
You might accidentally craft the legendary post which carries you whole blog.
You can’t know beforehand which blog posts will perform and which won’t.
So in the end you will have to write all of them, which is cool in itself.
More blog posts is more chances to be discovered.