Purpose: This study explores the relationships among multiple factors, including growth mindset, lifelong learning and continuous professional development (CPD), influencing teachers' integration of information and communication technology (ICT) into their teaching methods. Design/methodology/approach: The study involved 1,095 Indonesian vocational high school teachers who participated in in-service or preservice teacher development programs. Data was collected through a survey, and a structural equation model with partial least squares parameter estimation was used to analyze the relationships and mediations. Findings: Structural equation modeling revealed that a growth mindset positively affects both lifelong learning and CPD. Moreover, lifelong learning positively impacts CPD. Furthermore, all of these variables demonstrate a positive effect on teachers' ICT integration in the classroom. The findings indicate that lifelong learning and CPD partially mediate the relationship between a growth mindset and ICT integration. Originality/value: This study contributes to the literature on the determinants of teachers' ICT usage post-participation in in-service and preservice teacher programs. The findings underscore the significant impact of a growth mindset on teachers' ICT use in the classroom.