The moment you attach a story to a sensation, you own it for longer than you need to. Sensations, emotions, they have a very short life cycle unless we identify with them.

"There's a shakiness in my belly"…. that's a sensation. It will pass.

"There's shakiness in my belly because he’s going to leave me, and I'll end up alone, and I've always known this would happen, I’m always being abandoned.. I’m not good enough…" now you've built an entire mansion and moved in.

This is the loop.

Sensation → story → reinforced fear → stronger sensation → becomes a bigger story.

Breaking it requires noticing the moment you crossed from feeling into narrating, and come back to feeling. This is the turning point.