Change is an inevitable part of life. Transitions are all around us – births, deaths, graduations, anniversaries, moving to a new residence, marriage, divorce. Beginnings and endings are occurring constantly. Some are small and mundane: the ringing of the alarm clock to signal the start of a new day, or the finishing of a good book. Some are major and catastrophic: the destruction of the World Trade Center buildings, or the recent earthquakes in Haiti and Chile.