Meeting and rehearsing ahead of time can help participants feel calm and prepared for the actual intervention. It gives everyone a chance to share and get feedback on their statements. It's also a chance to identify and address any charged emotions that could interfere with or harm the intervention process if they came out on the actual day [source: Mooney].
Meet with everyone to rehearse and agree on common goals, roles and procedures. Arrange who will speak and in what order. Make sure that one person is designated as the leader -- this person is in charge of keeping everyone on track and thinking about the next steps. The leader has the goal of the intervention in mind and ensures the intervention continues to work toward that goal [source: Finnigan].
Testimonials are powerful and persuasive, so make sure everyone who has something to say has a written statement or list prepared in advance. If you have important points to make, you don't want to forget them. Writing everything down in advance also ensures that you aren't speaking in an emotionally charged way -- it allows you to develop what you want to say at a time when you're calm. Have participants make a list of examples of when the person's behavior hurt them or negatively affected them. Information should be factual and specific, and should address how it made the person feel. When possible, use recent incidents [source: Mooney].