Did you pray first and get in the spirit? Sometimes I do my best thinking while praying. Remove all obstacles, get close to God. It would definitely influence what you write. The HS is our helper. I don’t know if He would help on secular stuff but prayer can change your vibe, and help to get creative. You need the right vehicle- something where you can think out of the box.
I'm not good enough a writer to do Christian writing. The problem is in presenting the gospel without it becoming "message fiction." Message fiction tends to use straw man arguments and cardboard characters regardless of what that message may be, religious or secular. That's because the message, in the case of Christian writing, the gospel, is the main point the writer is trying to convey to their audience. A skilled writer can incorporate the message into fiction without the straw man arguments and cardboard characters, and convey the idea with a compelling story.
I'm not that good a writer. I've written exactly one Christian story (verses stories where characters were Christian). But it had a quasi-fantasy background, which would have set Christian publication's teeth on edge, and the Christian aspect set secular publications' teeth on edge (known through a personal rejection notice). The only way I could pull that one off was to have a conflicted main character who's personal resolution of his internal conflict also conveyed an aspect of the gospel, and that story came from a clear idea from beginning to end.
Everything else I've done could be classified as secular. Some have Christian overtones; some don't. Lately the words have stopped. Maybe due to self-censorship; maybe due to just being tired of what increasingly looks to be futile effort. Not everyone who picks up a golf club will play as well as Tiger Woods; not everyone who writes a sentence will write as well as C.S. Lewis or Stephen King.
Years ago, I had hoped to be able to earn a little bit writing when I retired. But as retirement looms with no real progress, that doesn't look like it's going to happen. Not even as a mid-lister.
Maybe I just don't see the point in it anymore. It all seems like nothing more than wasted effort.