Like you, I also have chronic anxiety and that undercurrent of uneasiness is always with me.

I do not have a calm place like the ocean or forest but, rather, I imagine in my mind something that feels calming for me. I have always believed in guardian angels so I simply picture in my mind that I am being completely surrounded by a bright white/blue light from my guardian angel — a bright white/blue light that is protective as much as it is calming, soothing, and loving. I imagine that light from my guardian angel shining down on me from high above. It works every time.

If a spiritual approach is not the thing for you, then maybe try imagining something that feels calming to as opposed to a specific place?