In this study; The effect of the nursing intervention program (education enriched with web 2.0 tools based on the Health Belief Model) on problematic internet use, loneliness and family harmony in adolescents who use the internet with problems will be determined.

In this study; The effect of the nursing intervention program (education enriched with web 2.0 tools based on the Health Belief Model) on problematic internet use, loneliness and family harmony in adolescents who use the internet with problems will be determined. This research is a cross-sectional randomized controlled experimental study with a cross-sectional type in the first stage and a pretest-posttest in the second stage.

Inclusion Criteria:

1. Being a secondary school student,
2. Agreeing to participate in the research,
3. Being open to communication and cooperation,
4. Can use web 2.0 tools via smartphone or computer

Exclusion Criteria:

- Having a score of less than 50 points and above 79 points on the Internet addiction scale.