Being stoic refers to a mindset characterized by emotional restraint and the ability to remain calm in the face of adversity. Stoics believe that one should not be overly affected by external events, focusing instead on maintaining inner peace and rationality. This approach encourages individuals to accept what they cannot control and to respond to challenges with composure. The philosophy of Stoicism, which originated in ancient Greece, emphasizes the importance of virtue and wisdom. Prominent figures like Epictetus and Marcus Aurelius taught that true happiness comes from within and that emotional detachment can lead to a more fulfilling life.