Grounding is a way of pulling attention back to the present moment when anxiety, panic, or dissociation has taken over. It works for many people, it costs nothing, and it takes about five minutes.
Why it works

Anxiety narrows attention onto threat. Panic adds a flood of body sensations. Dissociation pulls attention away from the senses entirely. Grounding reverses the direction: it loads attention onto neutral sensory input until the alarm system stands down. The exercise below is the 5-4-3-2-1 technique, the most commonly taught version.
The exercise

Look for five things you can see. Name them quietly or in your head: a lamp, a crack in the ceiling, a blue pen. Ordinary things are fine. The point is specific detail.
Find four things you can touch. Feel them one at a time: the fabric of your sleeve, the cool tabletop, the floor through your socks. Notice temperature and texture.
Listen for three things you can hear. Traffic, a fridge humming, your own breathing. Distant sounds work well.
Notice two things you can smell. Coffee, laundry detergent, the air itself. If nothing comes, recall a familiar smell instead.
Find one thing you can taste. A sip of water, a mint, the inside of your mouth. Then take one slow breath, longer out than in.
If the countdown loses its grip partway through, start again at five. Repetition is the mechanism, and there’s no failure state.
When to use it

The best moment is early: the first minute of rising panic, the first moment of unreality on a crowded street. Practiced when calm, the sequence becomes easier to reach when things get loud. A short daily rehearsal, done sitting on the edge of the bed or waiting for a kettle, builds the habit.
Grounding helps with panic, flashbacks, and acute anxiety. For ongoing conditions, the underlying pattern still needs its own treatment. Think of grounding as a handbrake: useful in the moment, separate from the engine repairs.
When to seek care
If panic attacks, dissociation, or intense anxiety are frequent, a professional can help with the underlying pattern, usually with CBT or exposure-based work. If grounding fails during a panic attack and symptoms include chest pain, fainting, or a heart rate that won’t settle, get medical help that day. And if a grounding exercise ever increases distress instead of reducing it, stop, and mention that response to a therapist; it’s useful clinical information.