The answer here really depends upon the individual who is doing the healing and their individual energetic (or karmic) circumstances. Normally, with any holistic based healing approach, true and genuine healing takes time and this is most certainly true of any energy based healing practice. By the time we feel physical or mental problems to the point of seeking medical attention, it is likely that there are quite a few disruptions within our energy field.
With time however, we always have the ability to restore energetic balance within ourselves thereby leading us towards full and complete health. Marty's story illustrates this point. Having being diagnosed with Fybromyalgia, a supposedly incurable disease, Marty was able clear away the necessary junk and dirt which then allowed his condition to be corrected.
Having said this, the process of deep inner transformation should not be thought of as an easy process by any means. Sometimes we will be asked to face our darkness head-on and sometimes it will not be pleasant. What is pleasant though are the vibrations that are there waiting for us on the other side.
As we move closer towards inner peace and love we find ourselves more calm in situations which may have infuriated us in the past, we find ourselves much more fun loving and happy as we move more freely through life. Really, it is something which is truly magical and life changing and is worth moving through the darkness for.