Loss of any kind messes with your sense of well being. Job loss, loss of a loved one, loss of health.... Having experienced a few of those myself recently (not my own health, thankfully), I've noticed some things I might not have paid much attention to in the past. There are little things that help to create a feeling of security when they are full or empty.
I knew someone once whose mother raised seven children on her own, after her husband developed multiple sclerosis. She went back to school to get her teacher's degree, and during that time, the family lived on very little money. One of her "full" idiosyncrasies was she always bought a new container of salt when she went to the store. Her kitchen cabinet was always full, even if only with containers of salt.