Overthinking often leads to unnecessary stress and anxiety, affecting both mental and physical well-being. To stop overthinking, it's essential to focus on the present moment and practice mindfulness. Techniques such as deep breathing, meditation, and regular physical activity can help calm the mind. Setting aside specific times for reflection can also prevent thoughts from becoming overwhelming. Additionally, breaking tasks into smaller, manageable steps can make them feel less daunting. Surrounding oneself with supportive people and seeking professional help if needed can also be beneficial. Keeping calm requires patience and practice, but with consistent effort, it's possible to achieve a more balanced and peaceful state of mind.