I am not sure I understood your full question,
But if you want to know whether healing exists or not,
then I can tell you that it trully does exist and just like any other
area in our reality, there are always true healers and fake ones.
Healing started the moment the man was created,
becuase part of being a human, people tend to get hurt or sick.
Most of the time, the human body can heal itself without any need of interference,
but sometime a man does need someone to help hime get better and cured.
There are a lot of methos to heal people:
Nowadays the common way is the western doctrine.
It mostly uses medicins which are mostly based on chemicals, matter and herbs.
Other methods are called 'alternative medicine' and sometimes uses the holistics approach.
As I understand, you are talking healing,
base on the holistics appraoch so I can tell
you that there are a dozens of methods in this area.
One group from these meathos is called "energetic healing":
Here you find methods such as: "Healing", "Reiki" and so much more.
All of these methods talk differntly and heal differntly but they all have something in common.
They use "Energy" to heal the human body, mind and soul.
Anybody can learn how to heal.
It is just a matter of will.
Bye.