On all levels, evolution occurs in response to a crisis situation, not infrequently a life-threatening one, when the old structures, inner or outer, are breaking down or are not working anymore. On a personal level, this often means the experience of loss of one kind or another: the death of a loved one, the end of a close relationship, loss of possessions, your home, status, or a breakdown of the external structures of your life that provided a sense of security.