The motivation and commitment to work of younger generations are crucial for ensuring companies' future workforce and productivity. In this context, understanding the dynamics underlying young employees' goal-directed processes is important. Motivation and volition are fundamental psychological constructs that explain how individuals initiate, sustain, and regulate goal-directed behaviors. Uncertainty can affect individuals' actions toward their goals and their ways of directing them, highlighting motivation and volition. Although previous research shows that uncertainty can weaken these processes, recent studies have indicated that uncertainty can be turned into a positive force through self-regulation. Considering these findings, this study adopts an interdisciplinary approach focusing on motivational, volitional, personality psychology, drawing on Heckhausen's Expectancy-Value Theory, the Rubicon Model, and Kuhl's Personality Systems Interaction Theory (PSI) to address the complex challenges young adults face in their work-related decision-making processes in uncertain environments. The study will follow a two-stage empirical research design with participants aged 18-30. The first stage will use qualitative methods with uncertainty scenarios to explore participants' goal-directing and self-regulation strategies. Responses will be analyzed via qualitative content analysis, focusing on cognitive and emotional processes. The second stage will use a quantitative survey design incorporating the Action Control Scale (ACS) to examine personality effects on motivation and volition. Finally, the results will be integrated within the Rubicon Model framework to develop a motivational intervention program for strengthening goal commitment under uncertainty. The program's effectiveness will be evaluated with a pre/post-test design, assessing changes in participants' motivational and volitional responses. This research aims to contribute to theory and practice by identifying key factors shaping motivation and volition in uncertain environments, by promoting sustainable work motivation and well-being through self-regulation. Initial results will be presented at the conference.