This research aimed to develop the training activities of the Jitsuksa process and promote the growth mindset of grade 9 students. The tools used in the study consisted of (1) 80 Jitsuksa training activity plans, (2) a mindset assessment form in a six-level ratio, ten items, and (3) an assessment form of growth mindset behavior. Statistics used for data analysis were mean percentage and standard deviation. The target group of this research is 18 students from grade 9 of a secondary school, which is collected by purposive sampling. The results showed that after using the Jitsuksa training activities, the scores for the change in the growth mindset by the mindset measure had the percentage scores of 55.55, 38.89, 49.07, 47.23, 51.85, 56.48, 52.77, 46.30, 62.04, and 56.49 in order of questions and the behavioral assessment questionnaire for the change in the growth mindset had the percentage scores of 61.11, 61.11, 44.44, 44.44, 66.67, 55.56, 55.56, 44.44, 58.82, and 66.67, respectively. As a result of the scores, developing the training activities of the Jitsuksa process to promote the growth mindset of grade 9 was successful.