Hope theory identifies goal, pathway, and agency as essential elements of hope that promote and maximize the effectiveness of treatment. Much significant evidence has indicated that hope is a strong predictor of substance involvement recovery. This study aimed to test the effectiveness of choice-based reality therapy in strengthening hope in recovery for women convicted of drug offences in Taiwan. The participants in the substance involvement treatment program were 44 incarcerated women convicted of drug offences, who were randomly selected and randomly assigned to equal-sized experimental and control groups. The results of the study, obtained by ANCOVA analysis, showed significant differences between the two groups in the posttest scores for sense of hope as measured in the subscales of goal setting and pursuing, adequate energy, and controlling pathway. The effect size values of the three variables suggested a moderate practical significance. The evidence provided in the present study indicates that, upon completion of the choice-based reality therapy for substance involvement, when compared with those who had not yet attended the program, Taiwanese women convicted of drug offences reported a significantly higher level of hope. Hope was measured by their ability in setting goals and overcoming obstacles and persistence in pursuing the goals they had set up, energy for recovery, and their capacity to set up pathways based on their goals. The findings highlight the value of choice-based reality therapy in enhancing hope of recovery for women convicted of drug offences.