The 3-3-3 rule for anxiety is a technique that uses emotional grounding to reduce anxiety.  The technique gets you to focus on the present, shifting your focus away from your worry.  Negative thoughts tend to stem from the future or the past, so by focusing on the here and now, you can reduce your negative thoughts and gain some clarity.  The 3-3-3 rule is a short exercise that you can use on a daily basis or during moments of high stress or anxiety.