I constantly have to tell myself this..., think about the STEEM reward and not the USD number at the bottom of your post. Makes sense what you say.. and the branding too.
I have maybe 7 subjects I blog about, when number 7 has been posted it's back to number 1 again. That is the brand of ME. I may do the odd post about something else, but consistency is the key.
I know what to write about... I feel I am knowledgeable about those topics.
Do they add value? Perhaps... some are lessons in history, some are reviews, some are strategy articles., some comedy and outrageous. , its a blogging platform so we shouldn't necessarily focus on this topic too much, but I feel like everything I write should add something.
Some create conversations, laughter, relationships, new posts, new interests, influence a changed behavior. While there is visibility on some, a lot of the value on Steem is hidden in minds.