Your First Step to Change is a self-help guide originally developed by the Division on Addictions at Harvard Medical School (now at Cambridge Health Alliance) as a booklet for callers to the Massachusetts Council on Compulsive Gambling. The guide is intended for gamblers who are concerned about their gambling and thinking about changing their behavior. It is based on research showing that people with addiction are ambivalent about changing their behavior. Produced with funding from the National Center for Responsible Gaming, through the Institute, and the Massachusetts Department of Public Health, Your First Step to Change is available as a free, confidential, interactive online tool and in downloadable PDF format. Downloadable PDFs of the hard copy guide are available in English, Spanish, Khmer (Cambodian), Mandarin Chinese and Vietnamese.