The ability to keep a stable emotional state even under trying or stressful circumstances is known as emotional stability. It is characterized by composure, fortitude, and constancy in actions and responses. Individuals who possess strong emotional stability typically manage stress effectively, bounce back swiftly from setbacks, and have few mood fluctuations. 

They are also less prone to act on impulse or let bad feelings control them, which promotes stronger relationships and more thoughtful decision making. Conversely, a lack of emotional stability can cause impatience, anxiety, or emotional volatility, which can have an impact on both personal and professional lives. 

Although emotional stability is a talent that may be developed, it can also be influenced by genetics, upbringing, and life experiences. Self reflection, mindfulness, and therapy are among practices that support the development of a more steady and optimistic emotional state.