Can I Stop My Reactivity Once It Starts?

The point isn't to not be reactive. The point is, can I stop my reactivity once it starts? Because the reactivity sets me up for more reactivity, right? I react. That's another and then there's the new stimulus in response. So this is about saying, can I put a gap anywhere in the chain? Sure, it may have been 20 links into it, but that's better than spending a whole life of reactivity where I never put a chain or a gap in it. But it doesn't matter where in the chain because as soon as I realize it's all a chain, well, I might as well stop it now even though I'm 20