Discuss the role of classical conditioning and operant conditioning in shaping human behavior. Provide real-life examples to illustrate how these types of learning can influence our everyday actions and reactions. Additionally, explore the concept of observational learning and its impact on behavior, highlighting instances where individuals learn from observing others. In your opinion, which form of learning do you believe has the most significant influence on human behavior, and why? Support your response with relevant theories and research findings in the field of psychology.