Research underscores the crucial role of motivation in language learning, emphasizing the connection between growth mindsets—belief in the power of effort to enhance ability—and motivation. This study addresses the need for an updated understanding of English language moti-
vation among Chilean secondary school students, as recent studies on this topic have been lacking since 2011 and 2013. Furthermore, the correlation between language mindsets and language learning motivation in this specific context remains unexplored. The study investigates these aspects among 86 Chilean secondary students, employing a mixed-methods approach using the Language Mindset Inventory, the L2 Motivational Self System (L2MSS) questionnaire, and diary entries. Through this comprehensive approach, the research reveals nuanced motivations, underlining the importance of the ideal L2 self and English learning experiences in shaping motivation, challenging traditional views on the significance of the ought-to L2 self. Quantitative analysis establishes a statistically significant association between language mindsets and L2 motivation. This finding supports the argument that learners with a growth mindset are more inclined to envision a positive ideal L2 self, driven by their belief in improvement and readiness to overcome obstacles in their language learning journey. The study suggests aligning the national curriculum with student aspirations and interests. Additionally, it underscores the significance of cultivating growth-oriented language mindsets in educational settings, with educators playing a pivotal role in inspiring students to approach language acquisition with enthusiasm, dedication, and perseverance.