When it comes to blogging, advice abounds; blog articles, a handbook, whatever will give you the skinny on site generators, hosting, domain names, SEO, building and maintaining an audience, making your articles pop,and whatever else.
However, there are two things that go unaddressed (or aren't addressed well): what to blog about, and building a permission structure to post it.
The former is the basic issue of anyone who wants to make something, but doesn't know what it is that they want to make, and, while it has its answers, its actual execution is intertwined with the latter.
For example, assuming that you, the reader, have friends that you communicate with often, the contents of the groupchat could be excellent blogfodder! There's genuine interest, you likely have opinions to discuss and critiques to make, and when you're done you can simply link your blog in a devastating to a disagreement.
(If you don't have friends, you can apply this technique to whatever you rant to yourself about in the shower)
However, this will naturally raise the question of "who's actually going to read this?"; the core of which is a sense that permission is required to both expend the effort required to write a blog, and to inflict that blog upon the world.
Now, there isn't really a good answer here. "Do it for yourself! 😊" isn't compelling in the abstract (especially if you don't habitually writing things down or out), and, if we're frank, validation (in one form or another) is a significant fuel source for a poaster.
I might take a look at my own history at this point, and dissect it to find where I found my own drive to write and post, and in fact I can provide an answer: Xitter. I made a note of this last December, and cited this as relevant:
So, case closed, right? Poast moar, poast longer, easy money; validation fuels further posting, likes and comments build the permission structure. But no, because there's more to it.
I had Grok take a look through my Xeet history for a phase change, and, while it didn't dig up a single transition point, it noted that the through-lines included social isolation and yearning, and honestly that tracks; Asami came out of a stressful period of caffeine abuse, isolation, and sleep deprivation in a Wisconsin winter, and you can view it as a breaking of the seal; my output increased significantly afterwards. Standard self-consciousness gets bypassed or pushed down by desperation.
Personally, I don't think "experience stress and isolation, then sublimate it into your writing" is useful advice for someone who just wants to have fun in the Atmosphere, or engage in retroweb classicism, or whatever. So, unless metacognition is your bag and you pushed through the veil the moment you read "permission structure", I can't help you here.