Sometimes anxiety arrives without warning, not in response to something specific, nor a genuine threat, but the free-floating kind that descends in the middle of an ordinary Tuesday, in a meeting, at a dinner table or whilst standing in the supermarket and fills your body with a quality of dread that has no clear address.

Here are the four things I do, because they work and are available to you anywhere, anytime, without equipment, medication or anyone around you knowing you are doing them.