Walk across the same corner of a lawn every day and a path appears. Nobody designed it. It's simply where the feet went.
Minds do this. The thought you keep returning to wears a track, and after a while it stops feeling like a choice and starts feeling like the terrain itself.
Which is good news running the other way. Attention is a slow tool, but it is a tool. Whatever you look at repeatedly is what you'll eventually find yourself living in the middle of.