Stoicism, an ancient Greek school of philosophy founded in Athens by Zeno of Citium in the early 3rd century BC, offers a timeless guide to living a good life. Its central teaching is that virtue, the highest good, is based on knowledge, and that the wise live in harmony with the divine Reason that governs nature. Stoics are known for their belief that we cannot control external events, only our responses to them. A key practice in Stoicism is the "dichotomy of control." This principle involves distinguishing between what is within our power and what is not. Our judgments, opinions, and actions are within our control, while things like our health, wealth, and the actions of others are not. By focusing our energy exclusively on what we can control, we can achieve a state of tranquility, or "apatheia," freeing ourselves from the emotional turmoil caused by external events. Modern cognitive-behavioral therapy (CBT) has drawn heavily from Stoic principles. The idea that our perceptions of events, rather than the events themselves, determine our emotional state is a cornerstone of both philosophies. In a world filled with uncertainty and distraction, Stoicism provides a practical framework for developing resilience, self-control, and inner peace.