Overthinking often leads to anxiety, self-doubt, and mental fatigue. It occurs when people replay situations or worry excessively about the future. To overcome it, focus on mindfulness and grounding exercises. Setting time limits for reflection and redirecting thoughts to actionable steps help break the cycle. Journaling or talking to a therapist provides perspective and relief. Self-compassion is essential—mistakes are part of growth. Practicing relaxation and staying present gradually quiets the mind. With awareness and support, overthinking can be managed effectively.