Writing, as old literature professors would say, is an art that needs practicing. It has to become a habit.
To me the very physical act of writing (since I write on paper first) and also the mental effort, needs practicing. One should not wait for inspiration to be bestowed upon them, but rather practice good writing. Like all great writers who locked themselves in their room for hours until they wrote enough for one day.
I too find myself often 'dry' of ideas or things to write that are 'worth' writing. But again I force myself to write at least a page.
Each to his own but if you write and post, I for one will read.
Cheers.