If I remember grounding is using the 5 senses such as taste, touch, hearing, smell, and sight. Like actually feeling the arms of a chair when you rest your arms on them, touching fabric or petting an animal, saying the alphabet backwards. You kind of focus on the task at hand. Sitting and focusing on breathing or listening to the different sounds going on around you. Doing these things helps you stay calmer and reduces anxiety. Listening to music is another.