I use freewrite by @mariannewest here to get my thoughts moving out. She gives a daily prompt and you write for only 5 minutes and do a post with that. There is a very nice community over there and I am proud to be a part of it. I think starting small like this has helped me and sometimes I am quite amazed by what comes out. Most people there write fiction. but my work in freewrite is almost always non-fiction.
I think the massive stuff will come if you start small first. If you are trying to write on steem - it is best to go where the people are. Writing my own posts on my own topics seems to get no attention.
Best of luck.