Purpose: This study intended to investigate the effectiveness of personal wisdom therapy approach in reducing internet addiction in adolescent female students. Method: The present study was a semi-experimental study and its statistical population was 200 adolescent female students studying in high schools in the city of Hamadan in the academic year 1399-1400 from which 34 female students, selected based on convenience sampling procedure, were randomly divided into experimental and control groups. The participants in the experimental group received 10 training sessions using a wisdom-therapy approach. In order to assess the participants’ internet addiction, the internet Addiction Scale developed by Young (2007) was used. The effect of the provided trainings was assessed using pre-test, post-test and two-month follow-up. In order to analyze the obtained data, a set of ANCOVA was run. Findings: The results revealed that personal wisdom-therapy had a statistically significant positive effect on reducing the level of internet addiction among adolescent female students. Impact and implication statement: since wisdom therapy has been effective in reducing internet addiction, all those involved in education, including teachers and school principals can design wisdom-based lessons and programs to help students in this regard and improve the quality of education.
