Which of the following is essential for understanding the emotions and reactions one experiences?

Detecting one's iceberg is crucial for understanding the emotions and reactions one experiences because it metaphorically refers to the underlying beliefs, values, and assumptions that shape a person’s emotional responses. Just as an iceberg has a visible tip above water, our observable behaviors and emotions are only a small part of what drives them; the larger, submerged part represents deeper emotional influences that often go unrecognized. By identifying these hidden aspects, individuals can gain insight into why they feel or react in certain ways. This self-awareness is essential for managing one’s emotions and reactions more effectively.

The other options, while beneficial to overall well-being and resilience, do not directly address the understanding of emotions in the same way. Resilience-building strategies can help in coping with stress but are more about managing reactions than understanding them. Practicing physical activity contributes to emotional well-being but doesn't specifically aid in deciphering the roots of emotional experiences. Improving social relationships can enhance support systems and emotional safety but does not inherently lead to a better understanding of one's internal emotional landscape.