Introduction: One of the challenges of the Asset-based Community Development (ABCD) model is identifying effective motivators for fostering citizen participation, a topic that has been largely overlooked in the theoretical literature. In contrast, Self-Determination Theory (SDT) emphasizes that understanding human motivation involves addressing innate psychological needs for competence, autonomy, and relatedness. By fostering motivation, selfconfidence, and a sense of autonomy among citizens and local communities through SDT, we can address the missing links that contribute to participation in ABCD, thereby reducing barriers to engagement. While the ABCD model focuses on enhancing community participation and prosperity based on internal assets, there has been insufficient attention to the internal motivations that drive individuals to participate. Consequently, SDT, which centers on enhancing intrinsic and individual motivations, provides a valuable framework for improving participatory processes within ABCD. This research aims to develop a new conceptual model for expanding citizen participation in ABCD by investigating the impact of SDT on the advancement of this approach, utilizing Fairclough's analytical framework. Methodology: The research methodology combines two qualitative approaches: Critical Discourse Analysis (CDA) using Fairclough's framework and Thematic Analysis (Figure 1). Fairclough's framework is applied at three levels— description, interpretation, and explanation—to linguistically analyze the discourses and theoretical foundations relating to Self-Determination Theory (SDT) and Asset-based Community Development (ABCD). Through thematic analysis, categories are identified from the analyzed texts, while Braun and Clarke's method is employed to determine initial codes, sub-themes, and main themes in alignment with Fairclough's three levels. This approach allows for a critical discourse analysis that uncovers both semantic and latent dimensions within the discourses through thematic exploration. Results: At the explanation level, 'space' was identified as the most significant factor and main theme for advancing SDT within the ABCD model. It was emphasized that enhancing self-determination and autonomy—core concepts of SDT—requires active engagement in social spaces. Rejecting hegemony, fostering democracy, cultivating sustainable motivations, and addressing power dynamics rely on individuals' presence in these spaces. It is through their engagement that both individual and social behaviors manifest.