Meditation is the practice of deliberately paying attention, usually to your breath, your body, or your surroundings, without trying to change what you notice. A widely cited review in JAMA Internal Medicine found moderate, durable evidence that mindfulness programmes improve anxiety, depression, and pain.
Meditation tends to work best as a regular practice rather than a one-off fix, and the benefit is usually gradual rather than immediate. If you are in acute distress right now, a grounding exercise or a breathing technique will likely help you faster. Meditation is not a substitute for counselling, particularly for ongoing anxiety, trauma, or depression.