I can SO relate to this! I firmly believe a niche is highly over-rated. It puts a fence around me that I neither want nor need. It’s hard enough to be creative some days without having to stick to a specific topic.
On the flip-side of that, I’m finding that having NO restrictions on topic is paralyzing me. Creativity NEEDS some constraints. Option-overwhelm is as big a hindrance as a niche. Just a different kind of hindrance.