Final answer:
While mastering calmness is beneficial, it's a subjective topic and not strictly true or false. Emotional regulation through metacognition is important, and historical events and figures reinforce the utility of calmness.
Step-by-step explanation:
Mastering calmness is a beneficial skill, but the statement 'One of the best lessons you can learn in life is to master how to remain calm' could be considered subjective and thus isn't strictly true or false. It's important to understand that remaining calm is a part of emotional regulation and can be very advantageous in various situations. However, learning to respond to strong emotions involves using metacognition to reflect on the sources of emotions and managing them effectively. This process is important for personal development and can help maintain mental health.
According to the Eysencks' theory, people with high levels of neuroticism may have a harder time remaining calm, as they are more likely to experience emotional instability compared to those who are more emotionally stable. Additionally, historical circumstances such as The Panic of 1819, have shown that external events can significantly impact collective emotional responses, in this case diminishing faith in the Second Bank of the United States.
Furthermore, historical figures like Madison have demonstrated that finding peaceful solutions to problems, requiring a certain level of calm and composure, can be more effective than more confrontational approaches at times, reinforcing the idea that mastering calmness can be advantageous.