I agree that the LBS goes through Elisabeth Kubler-Ross's stages of grief, though there are also other things mixed in, such as facing one's fears, working through one's core issues, learning detachment, that are more about self-growth than dealing with grief.
Also, even if you've reached Acceptance, once you get to Piecing, it's as though you have to cycle through the whole process again, on a different level, perhaps to "test" the changes and ensure that they hold.
