This report provides an in-depth analysis of personal consumer behavior, examining the purchasing patterns of three high-involvement products: a car, diamond jewelry, and furniture. It details the consumer's decision-making process, including need recognition, information search, evaluation of alternatives, purchase decisions, and post-purchase behavior for each product. The report explores both internal influences, such as personal needs, attitudes, personality, learning, and lifestyle, and external factors, including culture, social class, family, peers, social groups, and age, that impacted the consumer's choices. The analysis includes the consumer's experiences with each product, including the influence of marketing, brand loyalty, and any cognitive dissonance experienced. The report concludes by highlighting how understanding consumer behavior is vital for developing effective marketing strategies. The student's reflection on their buying habits offers valuable insights into the complexities of consumer decision-making, which can be applied to improve marketing efforts. The report emphasizes the importance of post-purchase behavior and its effect on consumer loyalty.