If surgery is in your future, request a room with a view. Humans prefer architecture that's similar to a forest canopy. There's fascinating research that suggests humans recover more quickly if they can see trees from their hospital window. If you're stuck on the fifth floor with no trees in sight, take landscape photographs and paintings with you. Place your own art on the wall, and re-create a vista that's pleasing to the eye.
Real flowers work miracles.
Specializing in diagnostics, he worked for 20 years in the medical field, primarily in hospital emergency rooms and with children, before devoting himself to writing and lecturing.