I think every artist I know, including myself, has very similar anxieties. The great thing, though, is that you can eventually stop wrestling with yourself. Because that's what actually is going on most of the time. Only you are so familiar with your work and way of working that it seems boring. But if you work with themes and ideas that really interest you, eventually you'll find your appreciative audience. They've been waiting for just your point of view. Keep it up. It's great!

I'm upvoting and following you. I hope you'll take a look at my work, too.