This is a completely odd thing but I've been doing it for years. For whatever reason eating ice calms me. I usually crunch it up in the blender but there's something about the cold and it being hard and waiting for it to melt that soothes me. I've been doing this a lot lately because it also helps my upset stomach from my med increase but maybe some ice would be soothing? (I am sure there is no basis in any science for this but I've found it calming for a good 20 years, since college at least, maybe sooner).