Our brains and the nervous system that connects it works 24/7 from our first to last breath. It is designed to keep going, but not for the continuous stimulation of the 21st century. It is easy to forget what calm and not activated really feels like, but if you give it a try, you will likely remember how wonderful that is. A couple ways to do that:
Gaze at this image for a few minutes, and feel what it would be like to be there physically- don't think about anything else.
Do 3 cycles of box breathing, focusing only on breathing.
Try a yoga nidra session.
Thanksgiving Day has so many special aspects that highlight how much we have to be grateful for. You get to pick your focus- family, friends, football, feast, foliage and so much more. It is easy to get swept up in the planning, or to feel sadness if something from the past is no more- Taking a few moments to get quiet, and focus on what is going right can turn that around.