A HUGE issue I used to have was pre-naming my post. Don’t ever do that period.
You see what was happening was I’d have an idea for a post and name it. After naming it I’d start writing about that single subject. I felt like it kept me on track with the main topic of what I was talking about.
This made it hard because I’d want to say something but would feel as if it strayed away from the original topic. I’d also make a title and then what I came up with was nothing to do with that.
The important thing is that you just write and let it flow out. Worry about the name of the post later. It’ll just freeze your creativity instead of just letting it flow.