This works to energetically remove the stored negative emotional energy stored throughout your body and heart areas, it also will also help remove the memory of trauma and pain stored in different areas of your body, due abuse/damage etc.
Its pretty safe to use as much as you need.
Usually the body keeps a sort of memory of things that have happened to it, like say a knife wound or even tattoos.
Even emotional energy can be stored, like emotional hurts/pain throughout your body and heart area. To reach a higher level of healing, these things sometimes need to be removed and released.
Or you may even be looking to just move forward in life and let go of the past hurts.