Financial Life Skill (FLS) Training Program is a development program for youth with ages ranging from 18 until 34 years old. This training program's purpose is to prepare the young generation to be ready to work and to be skilled in managing finances. This program is categorized as a project held by Youth through Economic Participation (YEP) United States Agency for International Development (USAID) Indonesia with a period of 3 (three) years. According to the result of the evaluation to the stakeholders and trainees, this program is considered very beneficial. However, there is no any information for the stakeholders about how FLS Training can be succeed and sustainable after the period of the project ends. This training aims to (1) map the influential variables in the FLS Training, (2) analyze key variables that hold essential roles in the success rate and the sustainability of the FLS Training, (3) developing a model of success and sustainability of the FLS Training program, and (4) simulate scenarios for intervention on the success and sustainable of FLS Training. This research used the in-depth interview method to the stakeholders to collect information on influential variables, and the survey method to obtain the most essentials roles. Secondary data and information were obtained from some reports and literatures. This research used the systems thinking approach and the system dynamics approach to analyze problems in order to attain a conceptual framework. The conceptual framework has to be able to illustrate the relationship between variables which influence to a system of FLS Training. The interactions between variables are visualized by a causal loop. This causal loop was formed using the systemic approach. The simulation for the model of success and sustainability of the FLS Training was carried out to decide on necessary interventions after the period of the project ends. The result of this research shows that 16 variables are influential to the success and the sustainability of the FLS Training. The key variables of FLS Training programs are the attractiveness of the program, the support of partner institutions, the number of partner institutions, the number of master trainers, the number of trainers, trainers' motivations, and the quality of the training. The result of the simulation reveals that the most optimal interventions for the FLS Training program are financial support from the hosting organization, resource allocation support, and an enhancement in collaboration. The result of this research is useful for various stakeholders in making decisions for the sake of success and sustainability of the FLS Training after the period of the project ends.

Keywords: financial life skills, success and sustainability, project