Every cell in my body is healthy.

Bone marrow is producing somewhere around two million red blood cells a second while you read this, and has never once asked for direction.

The scale below that is busier still. The lining of your gut renews itself in days. Taste buds are replaced roughly every fortnight. You have had this conversation with none of it.

Whatever else is going on, there is a great deal inside you working right now and asking for nothing.

It is a strange sort of company to keep, and it is entirely on your side.