Out of all the blogs you read, this one is probably the shortest, right? That's intentional. Because:
1) Most blogs can't keep my interest past a single mouse scroll.
2) This blog is specifically designed to provoke thought (including my own), not to do your thinking for you.
3) This abbreviated format has kept me motivated to write 5 posts a week for more than 5 years.
The reason most people who want to blog, don't do so, is because they think they don't have enough to say.
And I wonder if our 3-page minimum requirements in school killed us for what writing really is. Because not once did this minimum requirement make your essay better. Merely longer.
So, don't blog with minimum requirements. Don't write a post. Write a sentence. The random you have on your mind right now. If after you write it down, you are inspired to explain, do so. But, don't feel you have to. Sometimes, it just makes it worse.