How should I stop the words continuously repeating in my head?

The words repeat like this: "body language""chain reaction""trigger""responsible""nothing is going to happen". It is ridiculous that these words have no connection and so I wonder why did my mind pick up these words at all. But they have been continuously repeating since 2 years. I heard these words in movies. Please answer how can I stop this repetition.i tried to write these words in different but it didn't work. Please help.
Asked Mar 24, 2017

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