The Stop! Technique is commonly used in cognitive-behavioral therapy. The technique is taught to the client, who can use it to stop racing thoughts or obsessive worrying.
In this technique, when the obsessive or racing thoughts begin, the client says, clearly and distinctly, "Stop!" This then allows the client to substitute a new, healthier thought.
Many therapists encourage the client at first to yell out the "Stop!" This helps focus the attention on the word and away from the obsessive thought. Later, the client will be able to mentally yell the word without needing to say it aloud.

