This essay is a reflection on the learning experience from attending lectures and modules on the Clinical Reasoning Cycle (CRC), the Roper-Logan-Tierney (RLT) model, and person-centered care. The author describes their initial confusion in grasping the foundations of these theories and how, through in-depth discussions and application to a case study (Jim), they gained confidence in understanding their benefits and importance in clinical practice. The reflection evaluates the differences between these assessment-based theories and previous value-based theories, highlighting their role in gathering detailed patient information and informing care planning. The analysis emphasizes the importance of these theories in addressing the complexities of co-morbidities in an aging population, and the conclusion outlines a plan to implement these theories in future practice, focusing on continuous learning, skill development, and effective communication. The essay ends with an action plan for further developing the skills and knowledge necessary for effectively implementing these theories in practice, including conducting research on evidence-based articles and participating in workshops to enhance critical reasoning, problem-solving, decision-making, and communication skills.