Will you sit in front of your computer when you write your blog post?
You have to build an "environment" where you can "blog" or w/e you deem productive. I've been looking at https://kinopio.club/ to be my "default screen on computer start" for organizing thoughts, but it's not perfect.
(no affiliation and haven't used it, but I love the idea and that person's "tiny projects" are super cool!)