[agentultra]

Try writing in a private journal first in order to develop the habit of writing.

I'm a bit eccentric in this respect as I journal more than most people. I have subject matter journals that I use. When I'm working on graphics, I write in my graphics programming journal. When I'm working through abstract algebra, I write in my maths journal(s).

I do some times come across ideas for longer-form essays. But it's usually from the accumulation of small ideas, thoughts, feelings, and the like that I find them.

Eventually, blog posts.

However if it's the anxiety of performing for others that overwhelms you, try developing the habit of writing in private. You can conquer those anxieties later when you're more confident in your underlying skills.