**Abstract**

This research study aims to assess how metacognitive knowledge effectively contributes to various facets of personality development. The study involved 178 students who gained an understanding of metacognitive knowledge through their coursework. Data collection was conducted using the Metacognitive Knowledge Utilization Scale among the participants. The analysis indicated that the participants frequently apply these metacognitive variables to enhance their personal growth, task performance, and strategy implementation. This study highlights the significance of using metacognitive knowledge for comprehensive learner development and emphasizes the vital role of teachers in imparting metacognitive skills, thereby guiding learners towards personal growth. The findings underscore the potential of metacognitive knowledge in molding individuals into well-rounded personalities, with significant implications for educational practices.

**Keywords:** metacognitive knowledge, holistic development, person variable, task variable, strategy variable
