Overthinking involves fixating on specific thoughts or constantly anticipating future scenarios, which can negatively affect well-being and increase the risk of mental health issues. To manage overthinking, try grounding exercises, taking action, or seeking professional help. Meditation, even just five minutes daily, can help calm the mind, while gaining perspective by considering the long-term impact of your worries can alleviate stress. Viewing situations from different perspectives and focusing on actionable steps can also reduce overthinking. Finally, embracing fears and accepting that some things are beyond control can provide mental relief and promote better emotional health.