I used my Silva meditation, faith and the lessons from one of my favorite books. Viktor Frankl's, Mans Search for Meaning. I read it again after my husband died. I had to again search for my own sense of meaning. I was no longer the wife, the caregiver, the crusader, the defender versus the medical interventions.
I found that my olfactory sences were dominant at that point. I burnt an extraordinary number of candles every day/night.