This study examined past-year attempts to reduce or quit gambling among people who gamble. A total of 10,054 participants from across Canada were recruited from an online panel. The results showed that 5.7% of participants attempted to reduce or quit gambling in the past year. Among people with gambling problems, most people had attempted to reduce or quit gambling in the past year. Over 90% of these participants attempted to make the change on their own. Only 7.7% sought formal or informal treatment. The two common reasons for attempting self-change were not believing that one needed the help and being too ashamed to seek help. Over one-third rated their self-change attempt as quite or very successful.