Throughout my life, I have always been reading and hearing about economic issues and concepts, but I never thought about the impacts of economic models on my personal life. Before learning about microeconomic concepts, I always thought that a course in the field of Economics, would teach me theories that only apply to the economy of a nation as a whole and not to an individual’s life. However, there were a lot of concepts throughout this course that I found relative to my personal life. Among all the concepts that I have learned in the Microeconomics course, “Opportunity Cost”, “Sunk Cost”, and “Supply and Demand” have the most impact on my daily life. “Choice and Opportunity Cost” is one of the most important concepts of Microeconomics that I found it relative to my everyday life. Similar to many other students, limited time during the school semester, forces me to make choices about what to study, when to study, and how to estimate the opportunity cost of every choice. Applying opportunity cost concept in my day-to-day life helps me better schedule my study time. For instance, I usually choose to study during weekdays because the opportunity cost of studying on these nights is lower than studying on Friday or Saturday nights, when usually more exciting events are happening. On the other hand, if my alternative on weekend is to stay home and organize my closet and do my laundry, I would choose to study, because to me, the value of studying is more than the value of above alternatives. So, opportunity cost and making choices depends on my