Susan Anderson (psychotherapist)
While Kübler-Ross, Anderson, and others have attempted to define discrete stages of grief, such as an initial period of numbness leading to depression and finally to reorganization and recovery, most modern grief specialists recognize the variations and fluidity of grief experiences, that differ considerably in intensity and length among cultural groups and from person to person. No grief stage theory has been able to account for how people cope with loss, why they experience varying degrees and types of distress at different times, and how or when they adjust to a life without their loved one over time.
Nirvana (Buddhism)
The Theravada tradition identifies four progressive stages. The first three lead to favorable rebirths in more pleasant realms of existence, while the last culminates in nirvana as an Arahat who is a fully awakened person. The first three are reborn because they still have some of the fetters, while arhat has abandoned all ten fetters and, upon death will never be reborn in any realm or world, having wholly escaped "saṃsāra".