The proposed research will examine how the effectiveness of Motivational interviewing (MI) and the Good Lives Model (GLM) can be effective in rehabilitating forensic intellectual disability (ID) populations in the criminal justice system. The issue discussed is the high rate of persons with ID having to be overrepresented in the criminal justice system, where the identified groups are exposed to serious challenges, including communication problems, insufficient understanding, and poor support in rehabilitation. The integrated MI-GLM strategy will facilitate motivation, better rehabilitation, less recidivism, and higher life satisfaction and psychological well-being. The study used 10 MI sessions or 150 participants with ID using the principles of GLM. The intervention was evaluated in terms of key performance parameters, which included motivation levels, goal achievement, recidivism rates, life satisfaction, and psychological well-being before and after the intervention. The results indicated major improvements: motivation levels were improved by 73.33 % (0.45 to 0.78), achievement of goals was also improved by 140 % (30 % to 72 %), and recidivism also decreased by 44 % (50 % to 28 %). The life satisfaction and psychological well-being were enhanced by 72 and 50, respectively. The findings show that the integrated approach of MI-GLM was very effective as compared to MI-only and GLM-only options. The intervention group was the lowest-performing of all the metrics, which supports the advantages of the integrated approach. Finally, the research concludes with the idea that the integrated MI-GLM model has the potential to enhance the rehabilitation outcomes of individuals with learning disabilities in the criminal justice system. Future studies are to be oriented towards the long-term results, experimenting with the method on different populations, and its economic efficiency in practical use.