This study aims to describe character building through a positive habituation ecosystem based on the Seven Habits of Great Indonesian Children at TK YA BAKII Kesugihan, Cilacap Regency. The study employed a qualitative approach with a descriptive research design. The research subjects consisted of the principal, teachers, and students. Data were collected through observation, interviews, and documentation. Data analysis used the Miles and Huberman model, including data reduction, data display, and conclusion drawing. The findings reveal that character formation is implemented through habituation of waking up early and arriving on time, worshipping, exercising, consuming healthy and nutritious food, developing a love of learning, social participation, and sleeping early. These seven habits are integrated into daily school activities through a positive school culture and parental support. Consistent habituation successfully develops religious, disciplined, independent, responsible, socially caring, and learning-oriented character traits among young children. The success of the program is supported by teacher role models, a conducive school environment, and strong collaboration between school and families. Therefore, the positive habituation ecosystem based on the Seven Habits of Great Indonesian Children is an effective strategy for character building in early childhood education. Keywords: character education, positive habituation, Seven Habits of Great Indonesian Children, early childhood education, school ecosystem.
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