The letters Ψ or ψ can be a symbol for: psychology, psychiatry, and sometimes parapsychology (involving paranormal or relating with the supernatural subjects, especially research into extrasensory perception). I want this as a tattoo.
Serenity psychology- I see this as medicine varying culturally. Instead of reaching for ibuprofen, one can reach for natural remedies. Societies have been using herbs provided by nature for remedies as well as spiritual or religious attributions.