Dywed Mr Evans mai'r allwedd i bawb, beth bynnag eu swydd, yw rhoi eu hunain yn esgidiau'r claf - i weld y profiad drwy eu llygaid nhw, ac ymateb yn unol â hynny.
The key for everyone, whatever their particular job, Mr Evans says, is to put themselves in the shoes of the patient – to see the experience through their eyes, and to respond accordingly.