Self-confidence is essential in our daily lives. When we are confident, we can participate in our surroundings. If someone wants to be happy, they must need high self-confidence so as not to be underestimated by others and show skills in the form of work on social media, one of which is Instagram. Social media reflects the youth's identity through Instagram's high-quality pictures. However, the survey's findings showed that late adolescents (18 to 24 years old) had diminished self-confidence and made social comparisons with other people. Social comparison is a phenomenon that affects people's sense of worth. Social comparison can be caused by social media, where social media users tend to compare themselves with others. This affects the Self-confidence of the community. Therefore, this study analyzes the Self- confidence of a person who experiences the phenomenon of  Social comparison.  This research uses the theory of Social comparison and Self-confidence. This research uses qualitative methods with a phenomenological approach. The subject of the study itself was an Instagram user who experienced Social comparison. The subjects of this study were Instagram users who experienced the phenomenon of Social comparison. The results of this study show that a person who experiences the phenomenon of Social comparison has an impact on decreasing self-confidence. Still, on the other hand, a positive mindset is formed, namely motivation which increases a person's self-confidence.